"Design of Photonic Crystals with Multiple and Combined Band Gaps."

Men, Han., Ngoc Cuong Nguyen, Robert M. Freund, Kian-Meng Lim, Pablo Parrilo and Jaime Peraire. Physical Review E Vol. 85, No. 4 (2012): 1-8. Working Paper.

"Band Gap Optimization of Two-Dimensional Photonic Crystals Using Semidefinite Programming and Subspace Methods."

Men, Han, Ngoc Cuong Nguyen, Robert M. Freund, Pablo A. Parrilo and Jaime Peraire. Journal of Computational Physics Vol. 229, No. 10 (2010): 3706–3725. Working Paper.

"Equivalence of Convex Problem Geometry and Computational Complexity in the Separation Oracle Model."

Freund, Robert M., and Jorge R. Vera. Mathematics of Operations Research Vol. 34, No. 4 (2009): 869-879. Working Paper.

"An Efficient Re-Scaled Perceptron Algorithm for Conic Systems."

Belloni, Alexandre, Robert M. Freund and Santosh Vempala. Mathematics of Operations Research Vol. 34, No. 3 (2009): 621-641. Working Paper.

"A Geometric Analysis of Renegar's Condition Number, and its Interplay with Conic Curvature."

Belloni, Alexandre, and Robert M. Freund. Mathematical Programming Vol. 119, No. 1 (2009): 95-107. Working Paper.

"Projective Re-Normalization for Improving the Behavior of a Homogeneous Conic Linear System."

Belloni, Alexandre, and Robert M. Freund. Mathematical Programming Vol. 118, No. 2 (2009): 279-299. Working Paper.