Stays at universities abroad and Summer Schools

1. February 11 - February 18, 1997, Jagiellonian University, Krakow, Poland. Research Collaboration.
2. August 31 - September 6, 1997, Summer School on General Algebra and Ordered Sets, Strbske Pleso, Slovakia.
3. September 8 - September 11, 1997, Università Degli Studi di Brescia, Italy. Research Collaboration.
4. February 24 - February 28, 1998, Jagiellonian University, Krakow, Poland. Research Collaboration.
5. September 23 - September 26, 2000, University of Tartu, Estonia, Research Collaboration.
6. April 13 - April 19, 2000, Texas A & M University and University of Southern Louisiana, Lafayette, LA, USA. Conference and Research Collaboration.
7. August 22 - August 25, 2000, Jagiellonian University, Krakow, Poland. Research Collaboration.
8. September 10 - September 16, 2000, Cotronei, Crotone, Italy, Summer School ``Finiteness Conditions in Group Theory''.
9. July 1 - July 12, 2001, Budapest, Hungary, Summer School ``A course in Tame Congruence Theory''.
10. April 22 - April 28, 2002, University of Tartu, Estonia. Research Collaboration.
11. February 25 - March 2, 2003, Jagiellonian University, Krakow, Poland. Research Collaboration.