@article{10_4153_CMB_1969_002_9,
     author = {Shores, T.S.},
     title = {A {Note} on {Products} of {Normal} {Subgroups}},
     journal = {Canadian mathematical bulletin},
     pages = {21--24},
     year = {1969},
     volume = {12},
     number = {1},
     doi = {10.4153/CMB-1969-002-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-002-9/}
}