@article{MZ_1983__182_173287,
     author = {Ursula Martin Webb},
     title = {The {Number} of {Stem} {Covers} of an {Elementary} {Abelian} {p-Group.}},
     journal = {Mathematische Zeitschrift},
     pages = {327--338},
     publisher = {mathdoc},
     volume = {182},
     year = {1983},
     zbl = {0512.20034},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__182_173287/}
}