Some maximal elements' theorems in F C -spaces. He, Rong-Hua; Zhang, Yong — 2009 Journal of Inequalities and Applications [electronic only]
Twin periodic solutions of predator-prey dynamic system on time scales. He, Rong-Hua; Li, Hong-Xu; Zhang, Liang — 2009 Electronic Journal of Differential Equations (EJDE) [electronic only]