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In: Numerical methods for bifurcation problems: proceedings of the conference at the University of Dortmund, August 22 - 26, 1983, Jg. 70, S. 42-561983

The derived category of a tubular algebra
In: Representation Theory I: Finite dimensional algebras: Proceedings of the Fourth International Conference on Representations of Algebras, held in Ottawa, Canada, August 16-25, ... Part 1, Jg. 1177, S. 156-1801986

Experience, theory and design
In: Guidance, control, and evaluation in the public sector: the Bielefeld interdisciplinary project, Jg. 4, S. 787-8041986

Familie und Bevölkerungsentwicklung
In: Handbuch der Familien- und Jugendforschung, Jg. 1: Familienforschung, S. 513-5311989




