參考文獻:
Lynch, John K. Collins, Christine A. Freeman, Jennifer C. Gao, Ju Iyengar, Rajesh R. Judd, Andrew S. Kym, Philip R. Mulhern, Mathew M. Sham, Hing L. Souers, Andrew J. Zhao, Gang Wodka, Dariusz Patent: US2005/209274 A1, 2005 Location in patent: Page/Page column 48 US 20050209274 A1