Xin, Yu; Wen, Gui-An; Zeng, Wen-Jing; Zhao, Lei; Zhu, Xing-Rong; Fan, Qu-Li; Feng, Jia-Chun; Wang, Lian-Hui; Wei, Wei; Peng, Bo; Cao, Yong; Huang, Wei Macromolecules, 2005 , vol. 38, # 16 p. 6755 - 6758