@article{MZ_1970__114_171292,
     author = {John S. Wilson},
     title = {Some {Properties} of {Groups} {Inherited} by {Normal} {Subgroups} of {Finite} {Index.}},
     journal = {Mathematische Zeitschrift},
     pages = {19--21},
     publisher = {mathdoc},
     volume = {114},
     year = {1970},
     zbl = {0181.03503},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__114_171292/}
}