@article{MOMA_1990__110_3-4_178486,
     author = {Hartmut Menzer and Ren\'e Seibold},
     title = {On the {Average} {Number} of {Direct} {Factors} of a {Finite} {Abelian} {Group.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {63--72},
     publisher = {mathdoc},
     volume = {110},
     number = {3-4},
     year = {1990},
     zbl = {0731.11054},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1990__110_3-4_178486/}
}