参考文献

Blaquiere, Nicole; Do, Steven; Dudley, Danette; Folkes, Adrian; Heald, Robert; Heffron, Timothy; Jones, Mark; Kolesnikov, Aleksandr; Ndubaku, Chudi; Olivero, Alan G.; Price, Stephen; Staben, Steven; Wang, Lan Patent: US2011/76292 A1, 2011 ; Location in patent: Page/Page column 199 ;