@article{MZ_1962__78_170016, author = {Jonathan L. Alperin}, title = {A {p-Group} {Counterexample.}}, journal = {Mathematische Zeitschrift}, pages = {141--142}, publisher = {mathdoc}, volume = {78}, year = {1962}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MZ_1962__78_170016/} }