参考文献

Blake, James F.; Boyd, Steven Armen; De Meese, Jason; Fong, Kin Chiu; Gaudino, John J.; Kaplan, Tomas; Marlow, Allison L.; Seo, Jeongbeob; Thomas, Allen A.; Tian, Hongqi; Cohen, Frederick; Young, Wendy B. Patent: US2007/238726 A1, 2007 ; Location in patent: Page/Page column 75 ; US 20070238726 A1