Some subclasses of close-to-convex and quasi-convex functions with respect to k -symmetric points. Wang, Zhi-Gang; Gao, Chun-Yi — 2007 General Mathematics
On certain new subclass of close-to-convex functions. Wang, Zhi-Gang; Gao, Chun-Yi; Yuan, Shao-Mou — 2006 Matematichki Vesnik
On the univalency of certain analytic functions. Wang, Zhi-Gang; Gao, Chun-Yi; Yuan, Shao-Mou — 2006 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]