J. C. Helton

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Uncertainty and Sensitivity Analysis for Models of Complex Systems

J. C. Helton, J. Helton, Jon C Helton, 2008 .

Overview of methods for uncertainty analysis and sensitivity analysis in probabilistic risk assessment

R. L. Iman, J. C. Helton, 1984 .

Perspectives Gained in an Evaluation of Uncertainty, Sensitivity, and Decision Analysis Software

J. C. Helton, F. J. Davis, 1999 .

Sensitivity study of aerosol agglomeration and deposition using the MAEROS model

J. C. Helton, C. D. Leigh, 1984 .

Treatment of uncertainty in performance assessments for the geological disposal of radioactive waste

J. C. Helton, C. J. Sallaberry, J. Helton, 2017 .

Incorporation of Melcor source term predictions into probabilistic risk assessments

R. M. Summers, J. C. Helton, C. D. Leigh, 1989 .

Overview of methodology used for NUREG-1150 risk analyses

R. J. Breeding, J. C. Helton, E. D. Bergeron, 1988 .

Uncertainty analysis for geologic disposal of radioactive waste

J. C. Helton, R. N. Cranwell, 1981 .

Conceptual Structure of Performance Assessments Conducted for the Waste Isolation Pilot Plant

M. G. Marietta, J. C. Helton, Rob P. Rechard, 1992 .

Uncertainty and sensitivity analysis techniques for use in performance assessment for radioactive waste disposal

Jon C. Helton, J. C. Helton, 1993 .

A sampling-based computational strategy for the representation of epistemic uncertainty in model predictions with evidence theory

Jay D. Johnson, J. C. Helton, J. Helton, 2007 .

Latin hypercube sampling and the propagation of uncertainty in analyses of complex systems

Ajay K. Gupta, Naveed A. Sherwani, F. J. Davis, 2002, Reliab. Eng. Syst. Saf..

Appendix D: Listing of References for Uncertainty and Sensitivity Analysis 1

Jon C. Helton, J. C. Helton, 2001 .

Contamination of surface-water bodies after reactor accidents by the erosion of atmospherically deposited radionuclides.

J. C. Helton, A. Muller, A. Bayer, 1985, Health physics.

Representation of analysis results involving aleatory and epistemic uncertainty

Jon C. Helton, Cédric J. Sallaberry, Jay D. Johnson, 2010, Int. J. Gen. Syst..

Multiple predictor smoothing methods for sensitivity analysis

Jon C. Helton, Curtis B. Storlie, J. C. Helton, 2005, Proceedings of the Winter Simulation Conference, 2005..

Quantification of margins and uncertainties: Conceptual and computational basis

Jon C. Helton, J. C. Helton, J. Helton, 2011, Reliab. Eng. Syst. Saf..

An exploration of alternative approaches to the representation of uncertainty in model predictions

Jon C. Helton, Jay D. Johnson, William Oberkampf, 2003, Reliab. Eng. Syst. Saf..

Conceptual structure and computational organization of the 2008 performance assessment for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada

Jon C. Helton, Cédric J. Sallaberry, Clifford W. Hansen, 2014, Reliab. Eng. Syst. Saf..

Uncertainty and sensitivity analysis in performance assessment for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada

Jon C. Helton, Cédric J. Sallaberry, Clifford W. Hansen, 2012, Reliab. Eng. Syst. Saf..

Quantification of margins and uncertainties: Alternative representations of epistemic uncertainty

Jon C. Helton, Jay D. Johnson, J. C. Helton, 2011, Reliab. Eng. Syst. Saf..

Conceptual Structure of Performance Assessments for the Geologic Disposal of Radioactive Waste.

Jon C. Helton, Clifford W. Hansen, J. C. Helton, 2010 .

Uncertainty Analysis Plan Recommended by Sandia Technical Staff- DRAFT

Jon C. Helton, Cédric J. Sallaberry, Patrick D. Mattie, 2010 .

Conceptual basis for the definition and calculation of expected dose in performance assessments for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada

Jon C. Helton, Cédric J. Sallaberry, J. C. Helton, 2009, Reliab. Eng. Syst. Saf..

Extension of Latin hypercube samples with correlated variables

Jon C. Helton, Cédric J. Sallaberry, Stephen C. Hora, 2008, Reliab. Eng. Syst. Saf..

Challenge Problems : Uncertainty in System Response Given Uncertain Parameters ( DRAFT : November 29 , 2001 )

Jon C. Helton, Scott Ferson, Cliff Joslyn, 2001 .

Uncertainty and Sensitivity Analysis Results Obtained in the 1996 Performance Assessment for the Waste Isolation Pilot Plant

Jon C. Helton, Robert J. MacKinnon, J. E. Bean, 1998 .

Computational implementation of a systems prioritization methodology for the Waste Isolation Pilot Plant: a preliminary example

M. G. Marietta, Jon C. Helton, Stephen C. Hora, 1996 .

Uncertainty and sensitivity analysis results obtained in the 1992 performance assessment for the waste isolation pilot plant

M. G. Marietta, Jon C. Helton, Walter E. Beyeler, 1996 .

Effect of delayed link failure on probability of loss of assured safety in temperature-dependent systems with multiple weak and strong links

Jon C. Helton, Jay D. Johnson, William Oberkampf, 2009, Reliab. Eng. Syst. Saf..

Verification test problems for the calculation of probability of loss of assured safety in temperature-dependent systems with multiple weak and strong links

Jon C. Helton, Jay D. Johnson, William Oberkampf, 2007, Reliab. Eng. Syst. Saf..

Competing Failure Risk Analysis Using Evidence Theory

Jay D. Johnson, J. C. Helton, Jon C Helton, 2005, Risk analysis : an official publication of the Society for Risk Analysis.

Probability, conditional probability and complementary cumulative distribution functions in performance assessment for radioactive waste disposal

Jon C. Helton, J. C. Helton, 1996 .

Risk, Uncertainty in Risk, and the EPA Release Limits for Radioactive Waste Disposal

Jon C. Helton, J. C. Helton, 1993 .

Guest editorial: treatment of aleatory and epistemic uncertainty in performance assessments for complex systems

Jon C. Helton, David E. Burmaster, J. C. Helton, 1996 .

Sampling-based methods for uncertainty and sensitivity analysis.

Jon C. Helton, F. J. Davis, J. C. Helton, 2000 .

Implementation and evaluation of nonparametric regression procedures for sensitivity analysis of computationally demanding models

Jon C. Helton, Cédric J. Sallaberry, Curtis B. Storlie, 2009, Reliab. Eng. Syst. Saf..

Multiple predictor smoothing methods for sensitivity analysis: Description of techniques

Jon C. Helton, Curtis B. Storlie, J. C. Helton, 2008, Reliab. Eng. Syst. Saf..

Latin hypercube sampling and the propagation of uncertainty in analyses of complex systems

F. J. Davis, J. C. Helton, Freddie J. Davis, 2002, Reliab. Eng. Syst. Saf..

An Investigation of Uncertainty and Sensitivity Analysis Techniques for Computer Models

J. C. Helton, R. Iman, J. Helton, 1988 .

Investigation of Evidence Theory for Engineering Applications

Jon C. Helton, William L. Oberkampf, J. C. Helton, 2002 .

Multiple predictor smoothing methods for sensitivity analysis: Example results

Jon C. Helton, Curtis B. Storlie, J. C. Helton, 2008, Reliab. Eng. Syst. Saf..

An Approach to Sensitivity Analysis of Computer Models: Part II - Ranking of Input Variables, Response Surface Validation, Distribution Effect and Technique Synopsis

Jon C. Helton, James E. Campbell, Ronald L. Iman, 1981 .

Performance Assessment for the Waste Isolation Pilot Plant: From Regulation to Calculation for 40 CFR 191.13

Jon C. Helton, Melvin G. Marietta, J. C. Helton, 1997, Oper. Res..

Incorporating long-term climate change in performance assessment for the Waste Isolation Pilot Plant

B. L. Baker, J. W. Garner, J. C. Helton, 1994 .

Mathematical representation of uncertainty

Jon C. Helton, Kari Sentz, William L. Oberkampf, 2001 .

Development, analysis, and evaluation of a commercial software framework for the study of Extremely Low Probability of Rupture (xLPR) events at nuclear power plants.

Patrick D. Mattie, Jon Craig Helton, J. C. Helton, 2010 .

Survey of sampling-based methods for uncertainty and sensitivity analysis

Jon C. Helton, Cédric J. Sallaberry, Curtis B. Storlie, 2006, Reliab. Eng. Syst. Saf..

Sensitivity analysis in conjunction with evidence theory representations of epistemic uncertainty

Jon C. Helton, Cédric J. Sallaberry, Jay D. Johnson, 2006, Reliab. Eng. Syst. Saf..

A comparison of uncertainty and sensitivity analysis results obtained with random and Latin hypercube sampling

Jon C. Helton, Jay D. Johnson, F. J. Davis, 2005, Reliab. Eng. Syst. Saf..

Illustration of Sampling‐Based Methods for Uncertainty and Sensitivity Analysis

F. J. Davis, J. C. Helton, J. Helton, 2002, Risk analysis : an official publication of the Society for Risk Analysis.

Uncertainty and sensitivity analysis in the presence of stochastic and subjective uncertainty

J. C. Helton, J. Helton, 1997 .

Uncertainty and sensitivity analysis of a dry containment test problem for the MAEROS aerosol model

Jay D. Johnson, J. C. Helton, R. Iman, 1989 .

Probability of Loss of Assured Safety in Systems with Multiple Time-Dependent Failure Modes: Incorporation of Delayed Link Failure in the Presence of Aleatory Uncertainty

J. C. Helton, J. Helton, C. Sallaberry, 2021, Reliab. Eng. Syst. Saf..

Evidence Theory Representations for Properties Associated With Weak Link/Strong Link Systems, Part 1: Loss of Assured Safety

Jon C. Helton, John L. Darby, J. C. Helton, 2021 .

Margins associated with loss of assured safety for systems with multiple weak links and strong links

Jon C. Helton, Dusty Marie Brooks, Cédric J. Sallaberry, 2020, Reliab. Eng. Syst. Saf..

Property values associated with the failure of individual links in a system with multiple weak and strong links

J. C. Helton, J. Helton, C. Sallaberry, 2018, Reliab. Eng. Syst. Saf..

Quantification of margins and uncertainties: Example analyses from reactor safety and radioactive waste disposal involving the separation of aleatory and epistemic uncertainty

Jon C. Helton, Cédric J. Sallaberry, Jay D. Johnson, 2011, Reliab. Eng. Syst. Saf..

Treatment of Uncertainty in Performance Assessments for Complex Systems

Jon C. Helton, J. C. Helton, 1994 .

Direct releases to the surface and associated complementary cumulative distribution functions in the 1996 performance assessment for the Waste Isolation Pilot Plant: cuttings, cavings and spallings

Jon C. Helton, J. W. Garner, Jay D. Johnson, 2000, Reliab. Eng. Syst. Saf..

Probability of loss of assured safety in systems with multiple time-dependent failure modes: Representations with aleatory and epistemic uncertainty

Jon C. Helton, Cédric J. Sallaberry, Martin Pilch, 2014, Reliab. Eng. Syst. Saf..

Numerical methods in engineering and science

Jon C. Helton, Jon C. Helton, J. C. Helton, 1986 .

Statistical Analyses of Scatterplots to Identify Important Factors in Large-Scale Simulations, 1: Review and Comparison of Techniques

J. C. Helton, J. Kleijnen, J. Helton, 1999 .

Statistical Analyses of Scatterplots to Identify Important Factors in Large-Scale Simulations

J. C. Helton, J. Kleijnen, J. Helton, 1999 .

Uncertainty and Sensitivity Analysis of a Model for Multicomponent Aerosol Dynamics

Jon C. Helton, Ronald L. Iman, Jay D. Johnson, 1986 .

Analysis of computationally demanding models with continuous and categorical inputs

Jon C. Helton, Cédric J. Sallaberry, Curtis B. Storlie, 2013, Reliab. Eng. Syst. Saf..

Summary discussion of the 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, George Basabilvazo, Melvin G. Marietta, 2000, Reliab. Eng. Syst. Saf..

Chapter 12 Mathematical and numerical approaches in performance assessment for radioactive waste disposal: dealing with uncertainty

Jon C. Helton, J. C. Helton, 2000 .

The 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, Melvin G. Marietta, J. C. Helton, 1998, Reliability Engineering & System Safety.

Alternative representations of epistemic uncertainty

Jon C. Helton, William Oberkampf, J. C. Helton, 2004, Reliab. Eng. Syst. Saf..

Uncertainty and sensitivity analysis of food pathway results with the MACCS Reactor Accident Consequence Model

J. C. Helton, J. Johnson, A. Shiver, 1995 .

A COMPARISON OF UNCERTAINTY AND SENSITIVITY ANALYSIS TECHNIQUES FOR COMPUTER MODELS

J. C. Helton, R L Iman, J C Helton, 1985 .

Risk methodology for geologic disposal of radioactive waste: Final report

N. R. Ortiz, James E. Campbell, Dennis E. Longsine, 1987 .

Sensitivity Analysis of Model Output: SAMO 2004

Jon C. Helton, Roger M. Cooke, Andrea Saltelli, 2006, Reliab. Eng. Syst. Saf..

Characterization of subjective uncertainty in the 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, Martin S. Tierney, J. C. Helton, 2000, Reliab. Eng. Syst. Saf..

A Monte Carlo procedure for the construction of complementary cumulative distribution functions for comparison with the EPA release limits for radioactive waste disposal.

J C Helton, J. C. Helton, A W Shiver, 1995, Risk analysis : an official publication of the Society for Risk Analysis.

Uncertainty and sensitivity analysis in performance assessment for the Waste Isolation Pilot Plant

J. C. Helton, J. Helton, 1999 .

Comments on an evaluation of the 1992 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, K. M. Trauth, J. C. Helton, 1997 .

Uncertainty and sensitivity analysis for gas and brine migration at the Waste Isolation Pilot Plant: Permeable shaft with panel seals

Jon C. Helton, Peter N. Swift, J. E. Bean, 1996 .

Uncertainty and sensitivity analysis of chronic exposure results with the MACCS reactor accident consequence model

Jon C. Helton, A. W. Shiver, Jay D. Johnson, 1995 .

Ideas underlying the Quantification of Margins and Uncertainties

Jon C. Helton, Timothy G. Trucano, Martin Pilch, 2011, Reliab. Eng. Syst. Saf..

Sensitivity analysis techniques and results for performance assessment at the Waste Isolation Pilot Plant

Jon C. Helton, D. K. Rudeen, R. D. McCurley, 1991 .

Conceptual and computational basis for the quantification of margins and uncertainty.

Jon Craig Helton, J. C. Helton, 2009 .

Sensitivity analysis of the asymptotic behavior of a model for the environmental movement of radionuclides

Jon C. Helton, Ronald L. Iman, J. C. Helton, 1985 .

Evidence Theory for Engineering Applications

Jon C. Helton, William L. Oberkampf, J. C. Helton, 2004 .

Effect of alternative conceptual models in a preliminary performance assessment for the waste isolation pilot plant

M. G. Marietta, Jon C. Helton, Peter N. Swift, 1995 .

Representation of two-phase flow in the vicinity of the repository in the 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, Robert J. MacKinnon, J. E. Bean, 2000, Reliab. Eng. Syst. Saf..

Calculation of reactor accident safety goals

Jon C. Helton, J. C. Helton, Roger J. Breeding, 1993 .

Use of replicated Latin hypercube sampling to estimate sampling variance in uncertainty and sensitivity analysis results for the geologic disposal of radioactive waste

Jon C. Helton, Cédric J. Sallaberry, Clifford W. Hansen, 2012, Reliab. Eng. Syst. Saf..

Ideas underlying quantification of margins and uncertainties(QMU): a white paper.

Jon C. Helton, Timothy G. Trucano, Martin Pilch, 2006 .

Conceptual structure of the 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, George Basabilvazo, Melvin G. Marietta, 2000, Reliab. Eng. Syst. Saf..

Conceptual basis of a systems prioritization methodology for the Waste Isolation Pilot Plant

Jon C. Helton, Walter E. Beyeler, Stephen C. Hora, 1997 .

Sensitivity Analysis of Model Output: SAMO 2004

J. C. Helton, M. D. McKay, R. Cooke, 2006, Reliab. Eng. Syst. Saf..

Existence of integrals and the solution of integral equations

J. C. Helton, J. Helton, 1977 .

Numerical approximation of product integrals

J. C. Helton, S. Stuckwisch, 1976 .

Product integrals and the solution of integral equations

J. C. Helton, 1975 .

Approximations and asymptotic error formulas for nonlinear integral operations on Banach spaces

J. C. Helton, J. Helton, S. Stuckwisch, 1985 .

An approximation technique for nonlinear integral operations

J. C. Helton, S. Stuckwisch, 1978 .

Solution of integral equations by product integration

J. C. Helton, J. Helton, 1975 .

Performance Assessment in Support of the 1996 Compliance Certification Application for the Waste Isolation Pilot Plant

J. C. Helton, H. Jow, M. Marietta, 1998, Risk analysis : an official publication of the Society for Risk Analysis.

Quantification of Margins and Uncertainties

Jon C. Helton, Martin Pilch, J. C. Helton, 2011, Reliab. Eng. Syst. Saf..

17 – Treatment of uncertainty in performance assessments for the geological disposal of radioactive waste

J. C. Helton, J. Helton, 2010 .

Uncertainty and sensitivity analysis results obtained in a preliminary performance assessment for the Waste Isolation Pilot Plant

J. W. Garner, J. C. Helton, J. Helton, 1993 .

The NUREG-1150 probabilistic risk assessment for the Sequoyah Nuclear Plant☆

W. B. Murfin, J. C. Helton, J. J. Gregory, 1992 .

Computational implementation of sampling-based approaches to the calculation of expected dose in performance assessments for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada

Jon C. Helton, Cédric J. Sallaberry, J. C. Helton, 2009, Reliab. Eng. Syst. Saf..

The NUREG-1150 probabilistic risk assessment for the Peach Bottom Atomic Power Station

A. C. Payne, J. C. Helton, J. Helton, 1992 .

The NUREG-1150 probabilistic risk assessment for the Surry Nuclear Power Station☆

W. B. Murfin, J. C. Helton, J. Helton, 1992 .

The NUREG-1150 probabilistic risk assessment for the Grand Gulf Nuclear Station

T. D. Brown, J. C. Helton, J. Helton, 1992 .

Uncertainty and sensitivity analysis of early exposure results with the MACCS reactor accident consequence model 1

J. C. Helton, J. Helton, J. Johnson, 2003 .

PARTITION: A program for defining the source term/consequence analysis interface in the NUREG--1150 probabilistic risk assessments

Ronald L. Iman, Jon C. Helton, Jay D. Johnson, 1990 .

Evaluation of severe accident risks, Peach Bottom, Unit 2: Main report

Jon C. Helton, A. C. Payne, A. C. Payne, 1990 .

PRAMIS: Probabilistic Risk Assessment Model Integration System

Ronald L. Iman, Jon C. Helton, Jay D. Johnson, 1990 .

Sensitivity analysis in conjunction with evidence theory representations of epistemic uncertainty

Jay D. Johnson, J. C. Helton, W. Oberkampf, 2006, Reliab. Eng. Syst. Saf..

A FORTRAN 77 Program and User's Guide for the Statistical Analyses of Scatterplots to Identify Important Factors in Large-Scale Simulations

Jon C. Helton, J. C. Helton, Maichael J. Shortencarier, 1999 .

Uncertainty and sensitivity analysis for gas and brine migration at the waste isolation pilot plant : fully consolidated shaft

Jon C. Helton, Peter N. Swift, J. E. Bean, 1996 .

A distribution-free test for the relationship between model input and output when using Latin hypercube sampling

Jon C. Helton, Stephen C. Hora, J. C. Helton, 2003, Reliab. Eng. Syst. Saf..

Performance assessment for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada

Jon C. Helton, Peter N. Swift, Clifford W. Hansen, 2014, Reliab. Eng. Syst. Saf..

Uncertainty analysis associated with radioactive waste disposal: a discussion paper

J C Helton, J. C. Helton, R M Cranwell, 1980 .

Drilling intrusion probabilities for use in performance assessment for radioactive waste disposal

Jon C. Helton, J. C. Helton, 1993 .

Construction of complementary cumulative distribution functions for comparison with the EPA release limits for radioactive waste disposal

Jon C. Helton, J. C. Helton, Harold J. Iuzzolino, 1993 .

Preliminary comparison with 40 CFR Part 191, Subpart B for the Waste Isolation Pilot Plant, December 1991. Volume 4, Uncertainty and sensitivity analysis results

Jon C. Helton, Peter N. Swift, J. W. Garner, 1992 .

Existence of sum and product integrals

J. C. Helton, 1973 .

Sensitivity analysis of a model for the environmental movement of radionuclides.

J C Helton, J. C. Helton, R L Iman, 1982, Health physics.

Uncertainty and sensitivity analysis for two-phase flow in the vicinity of the repository in the 1996 performance assessment for the Waste Isolation Pilot Plant: undisturbed conditions

Jon C. Helton, Robert J. MacKinnon, J. E. Bean, 2000, Reliab. Eng. Syst. Saf..

Radionuclide transport in the vicinity of the repository and associated complementary cumulative distribution functions in the 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, J. W. Garner, Christine T. Stockman, 2000, Reliab. Eng. Syst. Saf..

Radionuclide and colloid transport in the Culebra Dolomite and associated complementary cumulative distribution functions in the 1996 performance assessment for the Waste Isolation Pilot Plant

Jon C. Helton, J. W. Garner, Jay D. Johnson, 2000, Reliab. Eng. Syst. Saf..

Uncertainty and sensitivity analysis for gas and brine migration at the Waste Isolation Pilot Plant: permeable shaft without panel seals

Jon C. Helton, Peter N. Swift, J. E. Bean, 1997 .

Computational structure of a performance assessment involving stochastic and subjective uncertainty

J. C. Helton, J.C. Helton, 1996, Proceedings Winter Simulation Conference.

The Repeatability of Uncertainty and Sensitivity Analyses for Complex Probabilistic Risk Assessments

Ronald L. Iman, Jon C. Helton, J. C. Helton, 1991 .

Evidence Theory Representations for Properties Associated With Weak Link/Strong Link Systems, Part 2: Failure Time and Failure Temperature

Jon C. Helton, John L. Darby, J. C. Helton, 2021, ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg.

Characterization, Propagation and Analysis of Aleatory and Epistemic Uncertainty in the 2008 Performance Assessment for the Proposed Repository for High-Level Radioactive Waste at Yucca Mountain, Nevada

Jon C. Helton, Cédric J. Sallaberry, Clifford W. Hansen, 2010, SUM.

OM =-qgoqo 7-- JUl 0 ? B 8 Uncertainty Analysis in the 1996 Performance

J. C. Helton, J. Helton, Basabilvazo, 2008 .

Stochastic and Subjective Uncertainty in the Assessment of Radiation Exposure at the Waste Isolation Pilot Plant

Jon C. Helton, Hong-Nian Jow, J. D. Johnson, 1998 .

Conceptual and Computational Structure of the 1996 Performance Assessment for the Waste Isolation Pilot Plant

M. G. Marietta, D. R. Anderson, Jon C. Helton, 1997 .

Evaluation of severe accident risks: Surry Unit 1

Jon C. Helton, R. J. Breeding, W. B. Murfin, 1990 .

Bounds on belief and plausibility of functionally propagated random sets

J. C. Helton, J. Helton, C. Joslyn, 2002, 2002 Annual Meeting of the North American Fuzzy Information Processing Society Proceedings. NAFIPS-FLINT 2002 (Cat. No. 02TH8622).

Summary from the epistemic uncertainty workshop: consensus amid diversity

Jon C. Helton, Kari Sentz, Scott Ferson, 2004, Reliab. Eng. Syst. Saf..

PATH1 self-teaching curriculum: example problems for Pathways-to-Man Model

J. C. Helton, J. Helton, N. Finley, 1982 .

Solution of two Volterra integral equations

J. C. Helton, 1978 .

Mutual existence of product integrals

J. C. Helton, J. Helton, 1974 .