- Professor systems and control University Groningen, The Netherlands, since 1973. Contributor articles to sci.
Author: The Analysis of Feedback Systems, 1972. managing editor: Society for Industrial and Applied Mathematics Journal on Control and Optimization, since 1988. Associate editor Dynamics Reported, since 1985. Managing editor Systems of Control Letters, since 1978.
Associate editor Rairo Automatique, 1978-1987, Control and Advanced Technology, since 1984, Applied Mathematics and Computation, since 1987, Acta Applicandae Mathematicae, since 1988, Mathematics of Control, Systems and Signals, 1988, Journal of Applied Mathematics and Computation, since 1989. Contributor articles to science journals. Fellow Institute of Electrical and Electronics Engineers (associate editor Transactions on Automatic Control 1971-1973).
Member Society for Industrial and Applied Mathematics Society for Industrial and Applied Mathematics, Dutch Mathematics Society (governing board 1982-1985), Dutch General Systems Society (Automatica Prize Paper 1987). Office: U Groningen Mathematics Inst PO Box 800 9700 AV GroningenNetherlands.