@article{oai:kitami-it.repo.nii.ac.jp:00006386,
 author = {ISOBE, Kiro},
 issue = {1},
 journal = {北見工業大学研究報告},
 month = {Nov},
 note = {application/pdf, Let G be a partially ordered abelian group and generated by G^＋.For two convex subgroups H and K of G，looking at the question generally we cannot obtain that H＋K is convex. We show some examples in such a case and we investigate into the case that H＋K is convex.},
 pages = {197--199},
 title = {Note on Convex Subgroups of Partially Ordered Abelian Groups},
 volume = {7},
 year = {1975}
}