creator Yamasaki, Hiromasa; Fujii, Masahiro; Tanigawa, Yoshikazu; Ueda, Atsumi; Ikehata, Ryo;
journal title THE ANNALS OF EDUCATIONAL RESEARCH
issue Issue 34
date of issued 2006-03
SelfDOI 10.15027/14954
creator Tanigawa, Yoshikazu; Hujii, Masahiro; Yamasaki, Hiroaki; Ueda, Atsumi; Ikehata, Ryo;
journal title THE ANNALS OF EDUCATIONAL RESEARCH
issue Issue 35
date of issued 2007-03-20
SelfDOI 10.15027/17425
creator Ikehata, Ryo;
journal title Hiroshima mathematical journal
volume Volume 30
issue Issue 1
date of issued 2000-03
creator Ikehata, Ryo; Suzuki, Takashi;
journal title Hiroshima mathematical journal
volume Volume 26
issue Issue 3
date of issued 1996-11