Limit cycles of Discontinuous Piecewise Linear differential Systems. - Pedro Toniol Cardin; Tiago de Carvalho; Jaume Llibre (Int. J. Bifurc. Chaos, 2011)

Fenichel Theory for Multiple Time Scale Singular Perturbation Problems. - Pedro Toniol Cardin; Marco Antonio Teixeira (SIAM J. Appl. Dyn. Syst., 2017)

CORRIGENDUM: Fenichel Theory for Multiple Time Scale Singular Perturbation Problems. - Pedro Toniol Cardin; Marco Antonio Teixeira (SIAM J. Appl. Dyn. Syst., 2019)