[bio] Major Interests: productivity growth and innovation, market structure.

Selected Works:
Toward Competition in Local Telephony, with J. Gregory Sidak. Washington, DC: MIT Press. 1995.
Entrepreneurship, Management and the Structure of Payoffs. Cambridge, MA: MIT Press. 1995.
A Linear Ricardo Model with Varying Parameters, with Ralph E. Gomory. Proceedings of the National Academy of Sciences of the United States of America, 92, no. 4. February 14, 1995.

Affiliations: past President, American Economic Association, Association of Environmental and Resource Economists, Eastern Economic Association.

Fellowships/Honors: Elected to the Academia Nazionale dei Lincei in Italy; Honorary Degree, Docteur Honoris Causa, from the Sorbonne, University of Paris; National Academy of Science; Honorary Doctorate, Stockholm School of Economics; Honorary Doctorate, University of Basel; Henry H. Villard Research Award, National Council on Economic Education and National Association Of Economic Educators; Docteur Honoris Causa, University Of Sciences and Technologies of Lille, France.