@article{GDZPPN002083140, title = {When is Zn the only Group of Order n?}, journal = {Elemente der Mathematik}, volume = {48}, year = {1993}, pages = {117-119}, zbl = {0829.20035}, url = {http://dml.mathdoc.fr/item/GDZPPN002083140} }
Gallian, J.A.; Moulton, D. When is Zn the only Group of Order n?. Elemente der Mathematik, Tome 48 (1993) pp. 117-119. http://gdmltest.u-ga.fr/item/GDZPPN002083140/