参考文献

Player, Mark R.; Dax, Scott L.; Parsons, William H.; Brandt, Michael Richard; Calvo, Raul R.; Patel, Sharmila; Liu, Jian; Cheung, Wing S.; Jetter, Michele C.; Lee, Yu-Kai; Youngman, Mark A.; Pan, Wenxi; Weils, Kenneth M.; Beauchamp, Derek A. Patent: US2007/259936 A1, 2007 ; Location in patent: Page/Page column 168 ; US 20070259936 A1