We complete the study of the bifurcations of saddle/spiral bimodal linear systems, depending on the respective traces T and t: one 2-codimensional bifurcation; four kinds of 1-codimensional bifurcations. We stratify the bifurcation set in the (T,t)-plane and we describe the qualitative changes of the dynamical behavior at each bifurcation point.
Ferrer, J., Peña, M., Susin, A. Bifurcation diagram of Saddle/Spiral bimodal linear systems. "International journal of bifurcation and chaos", 1 Gener 2017, vol. 27, núm. 1, p. 1-13.