1. K. Böhmer, W. Govaerts and V. Janovský, Numerical detection of symmetry breaking bifurcation points with nonlinear degeneracies, Bericht zur Fachbereich Mathematik der Philipps-Universität Marburg 1996.
2. On a numerical Liapunov-Schmidt method for operator equations;Böhmer, K.;Computing,1993
3. Computational methods for bifurcation problems with symmetries—with special attention to steady state and Hopf bifurcation points;Dellnitz, Michael;J. Comput. Appl. Math.,1989
4. K. Gatermann and R. Lauterbach, Automatic classification of normal forms, Preprint SC 95-3 (Februar 1995), Konrad-Zuse-Zentrum für Informationstechnik Berlin, Germany
5. Applied Mathematical Sciences;Golubitsky, Martin,1985