1. Moelle D., R. Gasch, Nonlinear Bogie Hunting, Proceedings 7th IAVSD-Symposium (A. H. Wickens ed.) Swets and Zeitlinger B. V., Lisse 1982, 455–467.
2. Seydel R., BIFPACK: A program package for calculating bifurcations, State University of New York at Buffalo, 1985.
3. Arnold V.I., Geometrische Methoden in der Theorie der gewöhnlichen Differentialgleichungen, VEB-Verlag, Berlin 1987.
4. Golubitsky M., I. Stewart, D. Schaeffer, Singularities and Groups in Bifurcation Theory, vol. I and II, Applied Math. Sciences 51 und 69, Springer-Verlag New York 1985, 1988.
5. Guckenheimer J., Ph. Holmes, Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields„ Applied Math. Sciences 42, Springer-Verlag, New York, 1983.