Setsuko Todoriki, Latiful Bari, Kazumi Kitta, Mika Ohba, Yasuhiro Ito, Yuka Tsujimoto, Norihito Kanamori, Erika Yano, Tatsuya Moriyama, Yukio Kawamura and Shinichi Kawamoto
Radiation Physics and Chemistry 78 ( 7 ): 619 - 621 , 2009