%0 Journal Article %A Damak, Hanen %A Hammami, Mohamed Ali %A Sun, Yeong-Jeu %T The existence of limit cycle for perturbed bilinear systems %J Kybernetika %D 2012 %P 177-189 %V 48 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2012__48_2_a0/ %G en %F KYB_2012__48_2_a0