1. Hirsch M.W., Smale S., Devaney R.L., eds., Differential Equations, Dynamical Systems, and an Introduction to Chaos, third edition edn. (Academic Press, Boston, 2013), ISBN 978-0-12-382010-5, https://www.sciencedirect.com/science/article/pii/B9780123820105000257
2. Kuznetsov Y.A., Elements of Applied Bifurcation Theory (Springer New York, New York, NY, 2004), ISBN 978-1-4757-3978-7, https://doi.org/10.1007/978-1-4757-3978-7_1
3. Arnold V.I., Afra˘ımovich V.S., Il’yashenko Y.S., Shil’nikov L.P., Bifurcation theory and catastrophe theory. Translated from the 1986 Russian original by N. D. Kazarinoff, reprint of the original English edition from the series Encyclopaedia of Mathematical Sciences (Dynamical systems V), 5 (1994) edn. (Berlin: Springer, 1999), ISBN 3-54065379-1
4. Wiggins S., Introduction to Applied Nonlinear Dynamical Systems and Chaos (Springer New York, New York, NY, 2003), ISBN 978-0-387-21749-9, https://doi.org/10.1007/0-387-21749-5_1
5. Hassard B.D., Kazarinoff N.D., Wan Y.H., Theory and applications of Hopf bifurcation, Vol. 41 of Lond. Math. Soc. Lect. Note Ser. (Cambridge University Press, Cambridge. London Mathematical Society, London, 1981)