Related by context. Frequent words. (Click for all words.) 52 Sadao 51 Hisao 49 Hirofumi 49 Matip 49 Mushi 49 Yoshinobu 49 Shinichi 49 Naoto 48 Hideyuki 48 Shoichi 48 Hisashi 48 Kamata 47 Katsuhiko 47 Keiji 47 Kazuyuki 47 Yoshihiro 47 Sekai 46 Masaharu 46 Inagaki 46 Junji 46 Kazuyoshi 46 Masatoshi 46 Seiji 46 Riko 45 Tadao 45 Kunihiko 45 Yoshikazu 45 Hirokazu 45 Omiya 45 Kohei 44 Michio 44 Uta 44 Masao 44 Seiichi 44 Kayo 44 Hideaki 44 Masaki 44 Masayuki 44 Ino 44 Yoshinori 44 Yoshitaka 44 Shida 44 Akihiko 43 Madoka 43 Tomoyuki 43 Tsutomu 43 Manabu 43 Hiroaki 43 Hans Ulrich 43 Masayoshi 43 Ebe 43 Udo 43 Kosugi 43 Osamu 43 Kazuhiko 43 Joho 43 Toshihiko 43 Onuma 42 Toshio 42 Kishi 42 Mitsuhiro 42 Shinichiro 42 Norio 42 Toshiaki 42 Shuji 42 Tako 42 Hata 42 Shinobu 42 Ogi 42 Koki 42 IOL Correspondent 42 Masanori 42 Yoshiyuki 42 Tsukasa 42 Eiji 41 Mitsuo 41 Sekiya 41 Hiroshi 41 Koichi 41 Nobuyuki 41 Toshi 41 Corresponding author 41 Takashi 41 Asakura 41 Yasuhiro 41 Eiichi 41 Kenta 41 Astrophys 41 Noboru 41 Masafumi 40 Ishizuka 40 Tomohiro 40 Erias Lukwago 40 Rei 40 Shigeru 40 Haruo 40 Yoshiaki 40 Kondo 40 Tatsuo 40 Ei 40 Yukie