Jae-Hun Kim, Nak-Yun Sung, H. Balaji Raghavendran, Yohan Yoon, Beom-Seok Song, Jong-il Choi, Young-Choon Yoo, Myung-Woo Byun, Young-Jeong Hwang and Ju-Woon Lee
Radiation Physics and Chemistry 78 ( 7 ): 425 - 428 , 2009