Gerald Thiemt

Enclosing Many Boxes by an Optimal Pair of Boxes

Peter Widmayer, Paolo Giulio Franciosa, Thomas Ohler, 1992, STACS.

Numerical Stability of simple Geometric Algorithms in the plane

Thomas Ottmann, Christian P. Ullrich, Gerald Thiemt, 1987, Computation Theory and Logic.

Numerical stability of geometric algorithms

Thomas Ottmann, Christian P. Ullrich, Gerald Thiemt, 1987, SCG '87.

An Optimal Algorithm for Approximating a Set of Rectangles by Two Minimum Area Rectangles

Peter Widmayer, Paolo Giulio Franciosa, Thomas Ohler, 1991, Workshop on Computational Geometry.

On arithmetical problems of geometric algorithms in the plane

Thomas Ottmann, Christian P. Ullrich, Gerald Thiemt, 1988 .