"On the Behavior of the Homogeneous Self-Dual Model for Conic Convex Optimization."

Freund, Robert M. Mathematical Programming Vol. 106, No. 3 (2006): 527-545. Working Paper.

"On an Extension of Condition Number Theory to Nonconic Convex Optimization."

Freund, Robert M., and Fernando Ordóñez. Mathematics of Operations Research Vol. 30, No. 1 (2005): 173-194. Working Paper.

"Computation of Minimum Volume Covering Ellipsoids."

Sun, Peng, and Robert M. Freund. Operations Research Vol. 52, No. 5 (2004): 690-706. Working Paper.

"Computational Experience and the Explanatory Value of Condition Numbers for Linear Optimization."

Ordóñez, Fernando, and Robert M. Freund. SIAM Journal on Optimization Vol. 14, No. 2 (2004): 307-333. Working Paper.

Data, Models, and Decisions: The Fundamentals of Management Science.

Bertsimas, Dimitris and Robert Freund. Belmont, MA: Dynamic Ideas, LLC, 2004.

"Complexity of Convex Optimization using Geometry-Based Measures and a Reference Point."

Freund, Robert M. Mathematical Programming Vol. 99, No. 2 (2004): 197-221. Working Paper.