参考文献

Chakravarty, Sarvajit; Dugar, Sundeep; Lu, Qing; Luedtke, Gregory R.; Mavunkel, Babu J.; Perumattam, John J.; Tester, Richland W. Patent: US2004/142940 A1, 2004 ; Location in patent: Page/Page column 70 ; US 20040142940 A1