参考文献:
Li, Qun Woods, Keith W. Zhu, Gui-Dong Fischer, John P. Gong, Jianchun Li, Tongmei Gandhi, Virajkumar Thomas, Sheela A. Packard, Garrick K. Song, Xiaohong Abrams, Jason N. Diebold, Robert B. Dinges, Jurgen Hutchins, Charles W. Stoll, Vincent S. Rosenberg, Saul H. Giranda, Vincent L. Patent: US23/995 A, 23 Location in patent: Page/Page column 34