"On the Primal-Dual Geometry of Level Sets in Linear and Conic Optimization."

Freund, Robert M. SIAM Journal on Optimization Vol. 13, No. 4 (2003): 1004-1013. Working Paper.

"On the Complexity of Computing Estimates of Condition Measures of a Conic Linear System."

Freund, Robert M. and Jorge R. Vera. Mathematics of Operations Research Vol. 28, No. 4 (2003): 625-648.

"Solution Methodologies for the Smallest Enclosing Circle Problem."

Xu, Sheng, Robert M. Freund, and Jie Sun. Computational Optimization and Applications Vol. 25, No. 1 (2003): 283-292.

"A New Condition Measure, Preconditioners, and Relations Between Different Measures of Conditioning for Conic Linear Systems."

Epelman, Marina, and Robert M. Freund. SIAM Journal on Optimization Vol. 12, No. 3 (2002): 627-655. Working Paper.

"Condition-Measure Bounds on the Behavior of the Central Trajectory of a Semi- Definite Program."

Nunez, Manuel A., and Robert M. Freund. SIAM Journal on Optimization Vol. 11, No. 3 (2001): 818-836. Working Paper.

"Condition Number Complexity of an Elementary Algorithm for Computing a Reliable Solution of a Conic Linear System."

Epelman, Marina, and Robert M. Freund. Mathematical Programming Vol. 88, No. 3 (2000): 451-485. Working Paper.