 | Anri Rukhadze , Moscow National University, Moscow, Russia,
Dec. 13-20, 1998 |
| Heinrich Hora , New South Wales University, , Australia,
Nov. 5-15, 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 |
| 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 |
|
