University of Leipzig, PhD, (1975); Bulgarian Academy of Sciences, Dr.sci. (1986);
Professor, Bulgarian Academy of Sciences, Institute of Sociology, Sofia, (1990-); head of Department of Global and Regional Development, Bulgarian Academy of Sciences, Institute of Sociology, (1990-); professor, Free University, Berlin, (2002-);
Chairman of the Social Science Commission, Bulgarian National Commission for UNESCO (1992-); vice-president of the International Social Science Council, Paris (1998-); director, UNESCO/MOST-ISSC International Summer School "Comparative Research in the Social Sciences" (2000-); international editor of American Journal of Sociology (1985-1987); member of the Editorial Council of Comparative Sociology (2001-).
