@article{MZ_1976__149_172392,
     author = {John C. Lennox},
     title = {Finitely {Generated} {Metabelian} {Groups} are not {Subnormality} {Separable.}},
     journal = {Mathematische Zeitschrift},
     pages = {201--202},
     publisher = {mathdoc},
     volume = {149},
     year = {1976},
     zbl = {0316.20027},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__149_172392/}
}