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@article{BNYMS_1893__3_186534, author = {F. Morley}, title = {Three {Notes} on {Permutations.}}, journal = {Bulletin of the New York Mathematical Society}, pages = {142--148}, publisher = {mathdoc}, volume = {3}, year = {1893}, zbl = {25.0335.01}, url = {http://geodesic.mathdoc.fr/item/BNYMS_1893__3_186534/} }
F. Morley. Three Notes on Permutations.. Bulletin of the New York Mathematical Society, Tome 3 (1893), pp. 142-148. http://geodesic.mathdoc.fr/item/BNYMS_1893__3_186534/