参考文献

Randolph, John T.; Chen, Hui-Ju; DeGoey, David A.; Flentge, Charles A.; Flosi, William J.; Grampovnik, David J.; Huang, Peggy P.; Hutchinson, Douglas K.; Kempf, Dale J.; Klein, Larry L.; Yeung, Ming C. Patent: US2005/159469 A1, 2005 ; Location in patent: Page/Page column 104 ; US 20050159469 A1