Fast Cholesky factorization for interior point methods of linear programming.(Working paper of the Laboratory of Operations Research and Decision Systems (LORDS) WP 94-5.)
Linear programming as a tool for solving multi-project scheduling limited resource problems. (Working paper of the Laboratory of Operations Research and Decision Systems (LORDS) WP 94-12.)
Advanced preprocessing for simplex and interior point algorithms. Discussionsbeitrage des Fachbereichs Wirtschaftwissenschaft der Freien Universität. (Betriebswirtschaftliche, Reihe 13.)