Byung Yeoup Chung, Min Ho Hyeong, Byung Chull An, Eun Mi Lee, Seung Sik Lee, Jin-Hong Kim, Jae-Sung Kim, Jae-Sung Kim, Tae-Hoon Kim and Jae-Young Cho
Radiation Physics and Chemistry 78 ( 7 ): 513 - 515 , 2009