参考文献

Thompson, Wayne; Young, Steven D.; Phillips, Brian T.; Munson, Peter; Whitter, Willie; Liverton, Nigel; Dieckhaus, Christine; Butcher, John; McCauley, John A.; McIntyre, Charles J.; Layton, Mark E.; Sanderson, Philip E. Patent: US2005/54658 A1, 2005 ; Location in patent: Page/Page column 17 ; US 20050054658 A1