About Betsumiya, Koichi
About Graduate School of Science and Technology, Hirosaki University
About Harada, Masaaki
About Department of Mathematical Sciences, Yamagata University
About Harada, Masaaki
About PRESTO, Japan Science and Technology Agency (JST)
About Munemasa, Akihiro
About Graduate School of Information Sciences, Tohoku University
About Electronic Journal of Combinatorics