@article{10_4153_CJM_1969_047_0,
     author = {Courter, Richard},
     title = {Finite {Direct} {Sums} of {Complete} {Matrix} {Rings} over {Perfect} {Completely} {Primary} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {430--446},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-047-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-047-0/}
}