@article{10_4153_CMB_1972_033_3,
     author = {Chacrono, M. and Thierrin, G.},
     title = {\ensuremath{\sigma}-Reflexive {Semigroups} and {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {185--188},
     year = {1972},
     volume = {15},
     number = {2},
     doi = {10.4153/CMB-1972-033-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-033-3/}
}