参考文献

Wang, Tao; Kadow, John F.; Meanwell, Nicholas A.; Yeung, Kap-Sun; Zhang, Zhongxing; Yin, Zhiwei; Qiu, Zhilei; Deon, Daniel H.; James, Clint A.; Ruediger, Edward H.; Bachand, Carol Patent: US2004/63744 A1, 2004 ; Location in patent: Page/Page column 70 ;