@article{MZ_1973__134_171968,
     author = {Elisabeth A. Pennington},
     title = {On {Products} of {Finite} {Nilpotent} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {81--84},
     publisher = {mathdoc},
     volume = {134},
     year = {1973},
     zbl = {0257.20017},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__134_171968/}
}