参考文献

Long, Daniel D.; Church, Timothy J.; Jacobsen, John R.; Jiang, Lan; Saito, Daisuke Roland; Stergiades, Ioanna; Van Dyke, Priscilla M.; Dalziel, Sean; Preza, Leticia Maria Patent: US2007/219278 A1, 2007 ; Location in patent: Page/Page column 23-24 ; US 20070219278 A1