@article{10_4153_CJM_1967_115_8,
     author = {Oppelt, John A.},
     title = {Mixed {Abelian} {Groups}},
     journal = {Canadian journal of mathematics},
     pages = {1259--1262},
     year = {1967},
     volume = {19},
     number = {1},
     doi = {10.4153/CJM-1967-115-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-115-8/}
}