参考文献:
LEWIS, Richard T. ALLEN, Jennifer R. CHENG, Yuan CHOQUETTE, Deborah EPSTEIN, Oleg GUZMAN-PEREZ, Angel HARRINGTON, Paul E. HUA, Zihao HUNGATE, Randall W. HUMAN, Jason Brooks JUDD, Ted LIU, Qingyian LOPEZ, Patricia MINATTI, Ana Elena OLIVIERI, Philip ROMERO, Karina RUMFELT, Shannon RZASA, Robert M. SCHENKEL, Laurie STELLWAGEN, John WHITE, Ryan XUE, Qiufen ZHENG, Xiao ZHONG, Wenge Patent: US04/0709 A, 04 Location in patent: Page/Page column