First Author:   William Barnett University of Kansas barnett@ku.edu   Department of Economics, Snow Hall, Rm 356, 1460 Jayhawk Blvd. Lawrence, 66045-7585, USA   785-864-2844(Phone) 785-864-2844(Fax) http://barnett.wustl.edu Second Author: Ousmane Seck University of Texas at El Paso seck1er@hotmail.com