A continuation principle for a class of periodically perturbed autonomous systems
arXiv:0709.4677 · doi:10.1002/mana.200610000
Abstract
In this paper we evaluate the topological index of periodic solutions otained via the Malkin-Loud bifurcation result. Incidentally, we do not assume that the perturbation is differentiale.
Accepted to Math. Nachr., Vol. 281, (2008), No. 1