Robert J. Sefcik

Affordable Development and Demonstration of a Small NTR Engine and Stage: How Small is Big Enough?

Stanley K. Borowski, David R. McCurdy, Bruce G. Schnitzler, 2015 .

An accelerated development, reduced cost approach to lunar/Mars exploration using a modular NTR-based space transportation system

John S. Clark, Robert J. Sefcik, R. Corban, 1992 .

Affordable Development and Demonstration of a Small Nuclear Thermal Rocket (NTR) Engine and Stage: How Small Is Big Enough?

Stanley K. Borowski, David R. McCurdy, Bruce G. Schnitzler, 2016 .

A comparison of nuclear thermal rocket development cost and schedule for piloted missions to Mars

Stanley K. Borowski, John S. Clark, Robert J. Sefcik, 1993 .

Nuclear electric propulsion: A better, safer, cheaper transportation system for human exploration of Mars

Leon P. Gefert, John S. Clark, Robert J. Sefcik, 1994 .

Affordable Development and Demonstration of a Small NTR engine and Stage: A Preliminary NASA, DOE, and Industry Assessment

Stanley K. Borowski, David R. McCurdy, Bruce G. Schnitzler, 2015 .