参考文献

Deshpande, Prashant P.; Ellsworth, Bruce A.; Singh, Janak; Denzel, Theodor W.; Lai, Chiajen; Crispino, Gerard; Randazzo, Michael E.; Gougoutas, Jack Z. Patent: US2004/138439 A1, 2004 ; Location in patent: Page 17 ; US 20040138439 A1