All 2019 2018 2017 2016 2015 2014
All Journal Article Presentation
Tohoku Mathematical Journal
Volume: 71 Pages: 487-494
10.2748/tmj/1576724789
Proceedings of the Japan Academy, Series A, Mathematical Sciences
Volume: 94 Pages: 59-63
10.3792/pjaa.94.59
Journal of Pure and Applied Algebra
Volume: 220 Pages: 2038-2048
10.1016/j.jpaa.2015.10.015
Beitraege zur Algebra und Geometrie / Contributions to Algebra and Geometry
Volume: in press Pages: 695-702
10.1007/s13366-013-0181-3
Beitrage zur Algebra und Geometrie
Volume: in press