1. Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, New York 11747-2275
2. Exxon Research and Engineering Company, Annandale, New Jersey 08801
3. Department of Physics, Queens College, Flushing, New York 11367
4. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802-5007
5. Fannie Mae, Washington, D.C. 20016