%0 Journal Article %A Bing Liu %T Periodic solutions of dissipative dynamical systems with singular potential and $p$-Laplacian %J Annales Polonici Mathematici %D 2002 %P 109-120 %V 79 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap79-2-2/ %R 10.4064/ap79-2-2 %G en %F 10_4064_ap79_2_2