Hiroshi Sudou
发表
Yasuhiro Koyama,
Mareki Honma,
Kenta Fujisawa,
1996
.
Shoichiro Asano,
Yasuhiro Koyama,
Eiji Kawai,
2009,
0910.5305.
Yoshiharu Asaki,
Edward B. Fomalont,
Yasuhiro Murata,
2007,
0707.0558.