参考文献

Lee, Jinbo; Kirincich, Steve J.; Smith, Michael J.; Wilson, Douglas P.; Follows, Bruce C.; Wan, Zhao-Kui; Joseph-McCarthy, Diane M.; Erbe, David V.; Zhang, Yan-Ling; Xu, Weixin; Tam, Steve Y. Patent: US2005/203081 A1, 2005 ; Location in patent: Page/Page column 12; 30 ; US 20050203081 A1