参考文献

Rawson, Thomas E.; Safina, Brian; Dotson, Jennafer; Zhou, Aihe; Aliagas-Martin, Ignacio; Halladay, Jason; Liang, Jun; Rueth, Matthias; Zhu, Bing-Yan Patent: US2007/37791 A1, 2007 ; Location in patent: Page/Page column 41 ; US 20070037791 A1