"Economic Analysis of Product Flexible Manufacturing System Investment Decisions."

Charles H. Fine and Robert M. Freund. In Proceedings of the Second ORSA/TIMS Conference on Flexible Manufacturing Systems--Operations Research Models and Applications, edited by Kathryn Stecke and Rajan Suri. Amsterdam, Netherlands : October 1986. Working Paper.

"Combinatorial Theorems on the Simplotope that Generalize Results on the Simplex and Cube."

Freund, Robert M. Mathematics of Operations Research Vol. 11, No. 1 (1986): 169-179.

"On the Complexity of Four Polyhedral Set Containment Problems."

Freund, Robert M., and James B. Orlin. Mathematical Programming Vol. 33, No. 2 (1985): 133-145.

"Identifying the Set of Always-Active Constraints in a System of Linear Inequalities by a Single Linear Program."

Freund, Robert M., Robin Roundy, and Michael J. Todd, Working Paper. October 1985.

"Postoptimal Analysis of a Linear Program Under Simultaneous Changes in Matrix Coefficients."

Freund, Robert M. In Mathematical Programming Essays in Honor of George B. Dantzig Part I, edited by Richard W. Cottle, 1-13. Amsterdam, Netherlands: North Holland Publishing Company, 1985. Working Paper.

"Variable Dimension Complexes, Part I: Basic Theory."

Freund, Robert M. Mathematics of Operations Research Vol. 9, No. 4 (1984): 479-497.