@article{GDZPPN00222397X, title = {An Arithmetic Property of Profinite Groups.}, journal = {Manuscripta mathematica}, volume = {39}, year = {1982}, pages = {11-18}, zbl = {0497.20016}, url = {http://dml.mathdoc.fr/item/GDZPPN00222397X} }
Herfort, Wolfgang. An Arithmetic Property of Profinite Groups.. Manuscripta mathematica, Tome 39 (1982) pp. 11-18. http://gdmltest.u-ga.fr/item/GDZPPN00222397X/