Stefan M. Grünvogel (1999)
In: Fiedler, B., Gröger, K. and J.Sprekels (edt.), EQUADIFF 99, Proceedings of the International Conference on Differential Equations, Berlin/Germany, August 1999 Vol. 2, pp. 853-855, World Scientific
Bifurcation of Control Sets at Singular Points
Stefan M. Grünvogel (1998)
In: Proceedings of the GAMM Jahrestagung 1998 Bremen