Books By Martin Herschend, Osamu Iyama, Hiroyuki Minamoto, Steffen Oppermann - Author

Martin Herschend, Uppsala University, Sweden.

Osamu Iyama, University of Tokyo, Japan.

Hiroyuki Minamoto, Osaka Metropolitan University, Japan.

Steffen Oppermann, Institutt for matematiske fag, Trondheim, Norway.