@article{GDZPPN002391279, title = {A Class of Groups All of Whose Elements}, journal = {Mathematische Zeitschrift}, volume = {78}, year = {1962}, pages = {91-96}, zbl = {0111.02801}, url = {http://dml.mathdoc.fr/item/GDZPPN002391279} }
Greendlinger, Martin. A Class of Groups All of Whose Elements. Mathematische Zeitschrift, Tome 78 (1962) pp. 91-96. http://gdmltest.u-ga.fr/item/GDZPPN002391279/