@article{10_4153_CMB_1975_011_2,
     author = {Lindstr\"om, Bernt},
     title = {Group {Partitions} and {Mixed} {Perfect} {Codes}},
     journal = {Canadian mathematical bulletin},
     pages = {57--60},
     year = {1975},
     volume = {18},
     number = {1},
     doi = {10.4153/CMB-1975-011-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-011-2/}
}