@article{10_4153_CMB_1972_025_1,
     author = {Nicholson, W. K.},
     title = {Local {Group} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {137--138},
     year = {1972},
     volume = {15},
     number = {1},
     doi = {10.4153/CMB-1972-025-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-025-1/}
}