[1] MIT,CAMBRIDGE,MA 02139
[2] BROWN UNIV,PROVIDENCE,RI 02912
[3] UNIV CAMBRIDGE,CAMBRIDGE,ENGLAND
[4] IIT,CHICAGO,IL 60616
[5] INDIANA UNIV,INDIANAPOLIS,IN 46204
[6] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218
[7] UNIV MONS,B-7000 MONS,BELGIUM
[8] CATHOLIC UNIV NIJMEGEN,NIJMEGEN,NETHERLANDS
[9] OAK RIDGE NATL LAB,OAK RIDGE,TN 37830
[10] UNIV PAVIA,I-27100 PAVIA,ITALY
[11] UNIV ROME,I-00100 ROME,ITALY
[12] RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903
[13] STEVENS INST TECHNOL,HOBOKEN,NJ 07030
[14] TECHNION ISRAEL INST TECHNOL,HAIFA,ISRAEL
[15] TEL AVIV UNIV,TEL AVIV,ISRAEL
[16] UNIV TRIESTE,I-34127 TRIESTE,ITALY
[17] UNIV TENNESSEE,KNOXVILLE,TN 37916
[18] WEIZMANN INST SCI,REHOVOT 76100,ISRAEL
[19] YALE UNIV,NEW HAVEN,CT 06520