参考文献

Konradi, Andrei W.; Probst, Gary; Aubele, Danielle L.; Garofalo, Albert W.; Hom, Roy; Neitzel, Martin L.; Semko, Christopher M.; Truong, Anh P. Patent: US2008/21056 A1, 2008 ; Location in patent: Page/Page column 78; 79 ; US 20080021056 A1