参考文献

Young, Erick Richard; Liu, Weimin; Prokopowicz, Anthony S.; Schlyer, Sabine K.; Shih, Cheng-Kon; Snow, Roger John; Bosanac, Todd; Ginn, John David; Hickey, Eugene Richard; Kirrane, Thomas Martin; Turner, Michael Robert; Wu, Frank Patent: US2008/161297 A1, 2008 ; Location in patent: Page/Page column 47 ; US 20080161297 A1