Supported by the Natural Science Foundation of Anhui Province(1408085MA02, 1208085 MA13, 1308085MA01, 1308085QA15); Supported by the Key Foundation of Anhui Education Bureau (KJ2012A019, KJ2013A028); Supported by the National Natural Science Foundation of China(11271371, 11301 004); Supported by the Research Fund for the Doctoral Program of Higher Education(20113401110001); Supported by 211 Project of Anhui University(02303129, 02303303-33030011, 02303902-39020011, KYXL2012004 XJYJXKC04, yfcl00012)
In this article, we investigate the existence of periodic solutions for a class of nonautonomous second-order differential systems with p(t)-Laplacian. Some multiplicity results are obtained by using critical point th...