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@article{MAN_1871__3_156505, author = {Cayley}, title = {On the deficiency of certain surfaces}, journal = {Mathematische Annalen}, pages = {526--529}, publisher = {mathdoc}, volume = {3}, year = {1871}, zbl = {03.0291.02}, url = {http://geodesic.mathdoc.fr/item/MAN_1871__3_156505/} }
Cayley. On the deficiency of certain surfaces. Mathematische Annalen, Tome 3 (1871), pp. 526-529. http://geodesic.mathdoc.fr/item/MAN_1871__3_156505/