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@article{MAN_1926__95_159150, author = {J.F. Ritt}, title = {Transcendental transcendency of certain functions of {Poincar\'e}}, journal = {Mathematische Annalen}, pages = {671--682}, publisher = {mathdoc}, volume = {95}, year = {1926}, zbl = {52.0321.04}, url = {http://geodesic.mathdoc.fr/item/MAN_1926__95_159150/} }
J.F. Ritt. Transcendental transcendency of certain functions of Poincaré. Mathematische Annalen, Tome 95 (1926), pp. 671-682. http://geodesic.mathdoc.fr/item/MAN_1926__95_159150/