1. Steven C. Bourassa, Florida Atlantic University, Boca Raton, FL 33431 or .
2. Donald R. Haurin, Ohio State University, Columbus, OH 43210 or .
3. Patric H. Hendershott, DePaul University, Chicago, IL 60604 or .
4. Martin Hoesli, University of Geneva, Geneva, Switzerland CH-1211 or .