参考文献

Lee, Chih-Hung; Bayburt, Erol K.; DiDomenico, Stanley; Drizin, Irene; Gomtsyan, Arthur R.; Koenig, John R.; Perner, Richard J.; Schmidt, Robert G.; Turner, Sean C.; Jinkerson, Tammie K.; Zheng, Guo Zhu Patent: US2005/113576 A1, 2005 ; Location in patent: Page/Page column 29-30 ; US 20050113576 A1