@article{10_4153_CMB_1984_071_x,
     author = {Tong, Jingcheng},
     title = {On the {Commutativity} of a {Ring} with {Identity}},
     journal = {Canadian mathematical bulletin},
     pages = {456--460},
     year = {1984},
     volume = {27},
     number = {4},
     doi = {10.4153/CMB-1984-071-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1984-071-x/}
}