1. Suizhi Xie, Dengxiang Liu, Mingluan Zhou, in: Raw rubber and reinforcing materials, edit by Weibin Zhou, volume 1 of The Handbook of Rubber Industry, Chemical Industry Press (1989). In Chinese.
2. Jiang Xu, Xiangqian Hua, Tao Zhang. Special Purpose Rubber Products Vol. 28 No. 1 (2007). p.33. In Chinese.