... of Inequalities and ApplicationsVolume 2009, Article ID 714179, 10 pagesdoi:10.1155/2009/714179 Research Article Infinitely Many Periodic Solutions for Variable Exponent SystemsXiaoli Guo,1Mingxin ... results for stationary electro-rheological fluids,” Archive for Rational Mechanics and Analysis, vol. 164, no. 3, pp. 213–259, 2002.2 E. Acerbi and G. Mingione, “Gradient estimates for the ... many papers on the existence of periodic solutions for p-Laplacian ellipticsystems, for example 21–24. The results on the periodic solutions for variable exponentsystems are rare. Through a...