Ph.D. in 1975 (Warsaw),
habilitation in 1985 (Warsaw University) and
scientific degree of a professor in 1997 (Warsaw University).
Actual position: Warsaw University, full professor
University of Mexico in Mexico City , 1978-79 (18 months),
University of California at Riverside, USA 1992-93 (12 months),
Universite Paris VII and Paris Nord (together 6 months)
Bonn University , Germany 1994-95 (12 months).
Liverpool University, Computer Science Dept. 1997-2002
New Jersey Institute of Technology, Computer Science Dept. 2002-2004
Coauthor/author of more than 130 publications,
coauthor of five books.