1. Beccherelli R., De Sio L., Umeton C. and Donisi D., IEEE Sensor, 140 (2008).
2. Dong Huijuan, Wu Jian and Zhang Guangyu, Chinese Optics Letters 7, 23 (2009).
3. Hotate Kazuo and Kajiwara Koji, Optics Express 16, 7881 (2008).
4. Liu Bo, Sun Guiling and Yang Yifei, Acta Scientiarum Naturalium University Nankaiensis 38, 9 (2005). (in Chinese)
5. ZHANG Lei and YU Qingxu, Journal of Optoelectronics · Laser 20, 1008 (2009). (in Chinese)