参考文献:
Gregor, Vlad E. Liu, Yahua Anikin, Alexey McGee, Danny Peter Claude Mikel, Charles McGrath, Douglas Eric Vavilala, Goverdhan Reddy Pickens, Jason C. Kadushkin, Alexander Jiang, Luyong Thiruvazhi, Mohan Santhanam Zozulya, Sergey Vairagoundar, Rajendran Zhu, Tong Chucholowski, Alexander Webb, Thomas Gantla, Vidyasagar Reddy Yan, Zheng Patent: US008/7769 A, 008 Location in patent: Page/Page column -3