Piao, Xianqing; Zhang, Xianmin; Mori, Yuichi; Koishi, Masayuki; Nakaya, Akinari; Inoue, Shinichiro; Aoki, Isao; Otomo, Akira; Yokoyama, Shiyoshi Journal of Polymer Science, Part A: Polymer Chemistry, 2011 , vol. 49, # 1 p. 47 - 54