参考文献

Anderson, Eric C.; Biediger, Ronald J.; Chen, Jie; Dupre, Brian; Lory, Pedro; Market, Robert V.; Monk, Keith A.; Savage, Michael M.; Tennyson, Reginald; Young, Brandon M. Patent: US2010/29753 A1, 2010 ; Location in patent: Page/Page column 24-25 ; US 20100029753 A1