参考文献

Feng, Jun; Gwaltney, Stephen L.; Stafford, Jeffrey A.; Zhang, Zhiyuan; Brodluahrer, Paul R.; Elder, Bruce; Isbester, Paul; Fornicola, Richard S.; Kisanga, Philip B.; Mobele, Bingidimi I.; Palmer, Grant J.; Reeve, Maxwell M.; Salsbury, Jonathon S.; Ulysse, Luckner; Venkatraman, Sripathy Patent: US2009/275750 A1, 2009 ; Location in patent: Page/Page column 22 ; US 20090275750 A1