Doctor of Philosophy, University Giessen, Germany, 1966. Habilitation, University Giessen, Germany, 1970. Doctor honorary causa, Ovidius University, Romania, 1995.
Instructor University Illinois, Champaign, 1966-1968. Research assistant University Montreal, Canada, 1969. Research associate McGill University, Montreal, Canada, 1969-1970.
Wissenschaftlicher rat, professor University Bielefeld, Germany, 1970-1974. Full professor University Stuttgart, Germany, since 1974.
Member American Mathematics Society, Academy of Sciences Erfurt, London Mathematics Society.
Married Christa B. Terberger, October 1, 1964. 1 child, Mark.