2000

Inapproximability of some geometric and quadratic optimization problems
A. Brieden, P. Gritzmann, V. Klee
Approximation and Complexity in Numerical Optimization: Continuous and Discrete Problems, Kluwer, 96 – 115

Oracle-polynomial-time approximation of largest simplices in bodies
A. Brieden, P. Gritzmann, V. Klee
Discrete Mathematics 221, 79 – 92