1. Professor, Department of Economics, 127 Morton Hall; College of William and Mary; Williamsburg VA 23187
2. Assistant Professor of Economics, College of Business and Economics; West Virginia University, 1601 University Avenue; Morgantown WV 26506
3. Professor, Department of Economics; University of Bern, Hochschulstrasse 4, 3012 Bern; Switzerland
4. Economist, Federal Trade Commission, 600 Pennsylvania Avenue, NW Washington; DC 20580
5. Research Associate, Technical University Munich, 85354 Freising; Germany