@article{10_4153_CMB_1966_048_3,
     author = {Bercov, R.},
     title = {On {Groups} with all {Composition} {Factors} {Isomorphic}},
     journal = {Canadian mathematical bulletin},
     pages = {413--415},
     year = {1966},
     volume = {9},
     number = {4},
     doi = {10.4153/CMB-1966-048-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1966-048-3/}
}