参考文献

Chu, Xin-Jie; Ding, Qingjie; Jiang, Nan; Kim, Kyungjin; Lovey, Allen John; McComas, Warren William; Mullin JR., John Guilfoyle; Tilley, Jefferson Wright Patent: US2004/6058 A1, 2004 ; Location in patent: Page/Page column 17-18 ; US 20040006058 A1