参考文献

Baker, Stephen J.; Sanders, Virginia; Akama, Tsutomu; Bellinger-Kawahara, Carolyn; Freund, Yvonne; Maples, Kirk R.; Plattner, Jacob J.; Zhang, Yong-Kang; Zhou, Huchen; Hernandez, Vincent S. Patent: US2007/293457 A1, 2007 ; Location in patent: Page/Page column 47 ;