参考文献

Salvati, Mark E.; Mitt, Toomas; Patel, Ramesh N.; Hanson, Ronald L.; Brzozowski, David; Goswami, Animesh; Chu, Linda Nga Hoong; Li, Wen-sen; Simpson, James H.; Totleben, Michael J.; He, Weixuan Patent: US2005/119228 A1, 2005 ; US 20050119228 A1