Li, Wen-Yan; Xiong, Xu-Qiong; Zhao, Dong-Mei; Shi, Yu-Fang; Yang, Zhi-Heng; Yu, Chao; Fan, Pei-Wei; Cheng, Mao-Sheng; Shen, Jing-Kang Molecules, 2012 , vol. 17, # 5 p. 5497 - 5507