Related by context. Frequent words. (Click for all words.) 52 National Astronomical Observatory 48 RIKEN 48 AIST 48 Hotta 47 Mitsuo 47 Masahiko 46 Tatsuo 46 Tomoyuki 45 Keio University 45 Tokyo Waseda University 45 Aizawa 45 Tetsuro 44 Shigeo 44 Nagao 44 Michio 44 Yoshikazu 44 Hatano 44 Hirakawa 44 Kazuyoshi 44 Mitsuru 43 Tohoku 43 Tsukuba 43 Masatoshi 43 Yoshihiro 43 Hiroaki 43 Inagaki 43 Masaru 43 Fumio 43 Eiji 43 Toshiaki 43 Nishio 43 Ishizuka 43 Hideyuki 42 Seiichi 42 Tetsu 42 Oki Electric 42 Nagasawa 42 Iijima 42 Yasuhiro 42 Hiroshi 41 Sasakawa 41 Fujitsu Laboratories 41 Kohei 41 Yusuke 41 Junji 41 Yuichi 41 Doshisha University 41 Kenichi 41 Riken 41 Tsuboi 41 NEDO 41 Toyama 41 Yasuhiko 41 Eguchi 41 Tatsumi 41 Kitamura 40 Murase 40 Kunihiko 40 Hagiwara 40 Tsukuba Japan 40 Muramatsu 40 Nobuo 40 Akihiko 40 Mikio 40 Keiji 40 Imamura 40 Imai 40 Masayoshi 40 Hamano 40 Tsurumi 40 Kurokawa 40 Takashi 40 Takeshita 40 Kataoka 39 Kawai 39 Akimoto 39 Yamada 39 Koyanagi 39 Hitoshi 39 Technology AIST 39 Tsuruta 39 Takayuki 39 Yoshinori 39 Yamagishi 39 Takanori 39 Teshima 39 Hirokazu 39 Satoshi 39 Sugita 39 Ogawa 39 Itoh 39 Ochiai 39 Takeuchi 39 Kuwahara 39 Kaname 39 Sato 39 Takahiro 38 Yoshimi 38 Radiation 38 Makoto 38 Atsushi