| 63-69 | Studies Mathematics/Physics at University of Erlangen-Nuremberg, Master 1969
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| 69-71 | Research Lab Siemens AG Erlangen, Graphics Software
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| 74 | Dr.-Ing., University of Erlangen-Nuremberg, Engineering Faculty
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| 79 | Habilitation at University of Erlangen-Nuremberg
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| 79-81 | Associate Professor Informatics, University of Koblenz-Landau
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| 81-86 | Full Professor Applied Informatics, University of Osnabrück
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| 86- | Full Professor Informatics (Software Engineering), RWTH Aachen University
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| 86- | Member of the Faculty of Mathematics, Informatics, and Natural Sciences
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| 92 | Offer from University of Zürich, Switzerland, rejected
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| 95- | Also Member of the Faculty of Electrical Engineering and Information Technology
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| 75- | Organization of many Intl. Workshops/Conferences
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| 75- | Membership in many Program Committees
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