Naoaki Yokoyama, Thillaiampalam Sivakumar, Naomi Ota, Ikuo Igarashi, Yukio Nakamura, Hidenari Yamashina, Shirou Matsui, Natsuko Fukumoto, Hiroshi Hata, Seiji Kondo, Mamoru Oshiro, Satoshi Zakimi, Yasuhiro Kuroda, Naoya Kojima, Kotaro Matsumoto, Hisashi Inokuma
Research papers (academic journals)