Existence of concave positive solutions for boundary value problem of nonlinear fractional differential equation with p -Laplacian operator. Wang, Jinhua; Xiang, Hongjun; Liu, Zhigang — 2010 International Journal of Mathematics and Mathematical Sciences
Positive solution to nonzero boundary values problem for a coupled system of nonlinear fractional differential equations. Wang, Jinhua; Xiang, Hongjun; Liu, Zhigang — 2010 International Journal of Differential Equations
Multiple periodic solutions of a discrete time predator-prey systems with type IV functional responses. Liu, Zhigang; Chen, Anping; Cao, Jinde; Chen, Fengde — 2004 Electronic Journal of Differential Equations (EJDE) [electronic only]