JATI K. SENGUPTAis professor of Economics at the University of California. He has published over 300 refereed articles and several books in economic theory, Data Envelopment Analysis, and operations research. PHILLIP FANCHON has published numerous articles and books in quantitative methods and applied economics. He has taught at the University of Rhode Island, University of Nevada, and University of California. He is Professor Emeritus at California Polytechnic, and currently Visiting Professor at the University of Paris.