PhD thesis supervised by Shibata 1995 Takaaki Yokoyama (Graduate Univ. of Advanced Study/NAOJ) 1997 Masamitsu Ohyama (Nagoya Univ.) 1999 Masumi Shimojo (Graduate Univ. of Advanced Study/NAOJ) 2000 Seiji Yashiro (Univ. Tokyo) 2000 Syuniti Tanuma (Univ. Tokyo) 2002 Seiichi Kato (Univ. Tokyo) 2004 Seiichiro Aoki (Univ. Tokyo) 2004 Yosuke Mizuno (Kyoto Univ.) 2005 Hiroaki Isobe (Kyoto Univ.) 2006 Hiromitsu Kigure (Kyoto Univ.) 2006 Noriyuki Narukage (Kyoto Univ.) 2006 Hiroyuki Takasaki (Kyoto Univ.) 2007 Daikou Shiota (Kyoto Univ.) 2007 Ahmed Ahmed Ibrahim (Kyoto Univ.) 2008 Joten Okamoto (Kyoto Univ.) 2008 Yohei Masada (Kyoto Univ.) 2009 Keisuke Nishida (Kyoto Univ.) 2009 Patric Antolin (Kyoto Univ.) 2010 Naoto Nishizuka (Kyoto Univ.) 2010 Takuma Matsumoto (Kyoto Univ.) 2011 Andrew Hillier (Kyoto Univ.) PhD thesis helped by Shibata 1994 Shigenobu Hirose (Univ. Tokyo) 1996 Mitsuru Hayashi (Chiba Univ.) 1998 Tetsuya Magara (Kyoto Univ.) 1998 Kuniko Hori (Tohoku Univ.) 2001 Takuhito Kuwabara (Chiba Univ.) 2006 Satoshi Nozawa (Ibaragi Univ.)