参考文献

BERRY, Angela; CIRILLO, Pier Francesco; HICKEY, Eugene Richard; RIETHER, Doris; Thomson, David S.; ERMANN, Monika; JENKINS, James Edward; MUSHI, Innocent; TAYLOR, Malcolm; CHOWDHURY, Chandana; PALMER, Christopher Francis; BLUMIRE, Nigel Patent: US2008/39464 A1, 2008 ; Location in patent: Page/Page column 30-31 ; US 20080039464 A1