@article{BUMI_2012_9_5_1_a6,
     author = {Russo, Alessio},
     title = {On {Numbers} which are {Orders} of {Nilpotent} {Groups} {Only}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {121--124},
     publisher = {mathdoc},
     volume = {Ser. 9, 5},
     number = {1},
     year = {2012},
     zbl = {1251.20026},
     mrnumber = {2919652},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2012_9_5_1_a6/}
}