 | Anri Rukhadze , Moscow National University, Moscow, Russia, Dec. 13-20, 1998 |
 | E. Mendelsohn , University of Toronto, Toronto, Canada, Nov. 23 - Dec. 23, 1998 |
 | Heinrich Hora , New South Wales University, , Australia, Nov. 5-15, 1998 |
 | W. Ruitenburg , Marquette University, Wisconsin, USA, Oct. 17 - Nov. 11, 1998 |
 | A. Edalat , Imperial College London, London, UK, Oct. 15 - Nov. 14, 1998 |
 | J.P. Tignol , Universite Catholique de Louvain, , Belgium, Aug. 25 - Sep. 2, 1998 |
 | U. Rehman , Universitat Bielefld, Bielefld, Germany, Aug. 25 - Sep. 2, 1998 |
 | H. Kiechle , Universitat Munich, Munich, Germany, Aug. 25 - Sep. 2, 1998 |
 | A. Barelli , Universite Paul Sabatier, , France, Aug. 16-24, 1998 |
 | J. Bellissard , Universite Paul Sabatier, , France, Aug. 16-24, 1998 |
 | Roya Mohayaee , Sao Paulo University, Sao Paulo, Brazil, July 22 - Aug. 23, 1998 |
 | Nodar Tsintsadze , Institute of Physics Academy of Sciences of Georgia, Tbilisi, Georgia, July 1 - Nov. 12, 1998 |
 | Sebastian Kuhn , Innsbruck University, Innsbruck, Austria, Jan. 4 - Feb. 1, 1998 |
 | A. Wassermann , University of Bayreuth, Bayreuth, Germany, Dec. 22, 1997 - Jan. 3, 1998 |
 | Elcio Abdalla , Sao Paulo University, Sao Paulo, Brazil, Dec. 10, 1997 - Feb. 4, 1998 |
 | L. Hadzievski , Institute of Nuclear Science, Vinca, Yogaslavya, Nov. 24, 1997 - April 20, 1998 |
 | Roya Mohayaee , Sao Paulo University, Sao Paulo, Brazil, Nov. 22, 1997 - May 11, 1998 |
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