参考文献

Wu, Chengde; Anderson, C. Eric; Bui, Huong; Gao, Daxin; Kassir, Jamal; Li, Wen; Wang, Junmei; Biediger, Ronald; Chen, Jie; Market, Robert V. Patent: US2005/49286 A1, 2005 ; US 20050049286 A1