Linking method for periodic non-autonomous fourth-order differential equations with superquadratic potentials. Li, Chengyue; Shi, Changhua — 2009 Electronic Journal of Differential Equations (EJDE) [electronic only]
On homoclinic solutions of a semilinear p -Laplacian difference equation with periodic coefficients. Cabada, Alberto; Li, Chengyue; Tersian, Stepan — 2010 Advances in Difference Equations [electronic only]