Short-Term E-Procurement Strategies Vs. Long-Term Contracts Barchi Peleg ∗ · Hau L. Lee · Warren H. Hausman Department of Management Science and Engineering Stanford University Stanford, CA 94305-4026 USA ∗ Corresponding Author: barchi@stanford.edu Phone: (650) 736-1831 Fax: (650) 725-8799 February 15, 2002