@article{MM2_1982__37_154824,
     author = {Wolfgang Herfort},
     title = {An {Arithmetic} {Property} of {Profinite} {Groups.}},
     journal = {Manuscripta mathematica},
     pages = {11--18},
     publisher = {mathdoc},
     volume = {37},
     year = {1982},
     zbl = {0497.20016},
     url = {http://geodesic.mathdoc.fr/item/MM2_1982__37_154824/}
}