| 1984 PhD | Sofia University, Faculty of Mathematics & Comp. Sci., | 
| Department of Mathematical Logic | |
| 1978 M.Sc. | Sofia University, Faculty of Mathematics & Comp. Sci., | 
| Department of Mathematical Logic | |
| 1976 B.Sc. | Sofia University, Faculty of Mathematics & Comp. Sci. | 
| 1993 -- present | Associate Professor, Faculty of Mathematics & Comp. Sci. | 
| 1988 -- 1993 | General Assistant-Professor, same division | 
| 1984 -- 1987 | General Assistant Professor, High Pedagogical | 
| Institute of Shumen, Department of Natural Sciences | |
| 1980 -- 1984 | Senior Assistant Professor, same division | 
| 1978 -- 1980 | Assistant Professor | 
| Jan.-Feb. 1985 | Visiting Fellow, University Of Novosibirsk, | 
| Department of Algebra and Logic, Novosibirsk, USSR | |
| June, 1986 | Visiting Fellow, Institute of Mathematics, | 
| Department of Computer Science, Debrecen, Hungary | |
| Jan.-March, 1992 | Visiting Fellow, Maximilian University of | 
| Department of Computer Sci., | |
| Laboratory for Logic and Language, Munich, Germany | 
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