Visualization in the decision support system WINGDSS 4.0. (Working paper of the Laboratory of Operations Research and Decision Systems (LORDS) WP 95-3.)
On free variables in interior point methods. (Technical report of Imperial College of Science, Technology and Medicine. Department of Computing, DOC 97/4.)
The practical linear algebra of interior point methods for linear programming. (Technical Report of Departmet of Mathematics and Statistics, Brunel University TR/10/95.)
On a property of the Cholesky factorization and its consequences for interior point methods. ( Working paper of the Laboratory of Operations Research and Decision Systems, (LORDS) WP 98-7.)
On the Cholesky factorization in interior point methods. (Working paper of the Laboratory of Operations Research and Decision Systems (LORDS) WP 2002-5)
On sensitivity analysis for a class of decision systems (revised version). (Working paper of the Laboratory of Operations Research and Decision Systems (LORDS) WP 93-7.)