%0 Journal Article %A Liang Zhang %A Yi Chen %T Existence of Periodic Solutions of $p(t)$-Laplacian Systems %J Bulletin of the Malaysian Mathematical Society %D 2012 %V 35 %N 1 %U http://geodesic.mathdoc.fr/item/BMMS_2012_35_1_a2/ %F BMMS_2012_35_1_a2