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@article{MZ_1968__106_171017, author = {L. Dornhoff and E.L. Spitznagel}, title = {Density of {Finite} {Simple} {Group} {Orders.}}, journal = {Mathematische Zeitschrift}, pages = {175--177}, publisher = {mathdoc}, volume = {106}, year = {1968}, zbl = {0159.31103}, url = {http://geodesic.mathdoc.fr/item/MZ_1968__106_171017/} }
L. Dornhoff; E.L. Spitznagel. Density of Finite Simple Group Orders.. Mathematische Zeitschrift, Tome 106 (1968), pp. 175-177. http://geodesic.mathdoc.fr/item/MZ_1968__106_171017/