@article{GDZPPN00239135X, title = {A p-Group Counterexample.}, journal = {Mathematische Zeitschrift}, volume = {78}, year = {1962}, pages = {141-142}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN00239135X} }
Alperin, Jonathan L. A p-Group Counterexample.. Mathematische Zeitschrift, Tome 78 (1962) pp. 141-142. http://gdmltest.u-ga.fr/item/GDZPPN00239135X/