Periodic solutions of a second order forced sublinear differential equation with delay. - Jingwen Li 004; Sui Sun Cheng (Appl. Math. Lett., 2005)

A necessary and sufficient condition for the existence of positive periodic solutions of a model of hematopoiesis. - Xinmin Wu; Jingwen Li 004; Hou-Qing Zhou (Comput. Math. Appl., 2007)

Existence of positive periodic solutions for a generalized prey-predator model with harvesting term. - Xinmin Wu; Jingwen Li 004; Zhicheng Wang (Comput. Math. Appl., 2008)

Remarks on a set of sufficient conditions for global attractivity in a model of hematopoiesis. - Jingwen Li 004; Sui Sun Cheng (Comput. Math. Appl., 2010)