1. Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
2. McGill University, 817 Sherbrooke West, Montreal, Quebec, H3A 2K6, Canada
3. Lehigh University, 13 East Packer Avenue, Bethlehem, PA 18015-3176
4. Degenkolb Engineers, 300 Frank H. Ogawa Plaza, Oakland, California 94612