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@article{CM_1938__5__1_0, author = {Trjitzinsky, W. J.}, title = {Non-linear difference equations}, journal = {Compositio Mathematica}, pages = {1--66}, publisher = {Johnson Reprint Corporation}, volume = {5}, year = {1938}, zbl = {0017.30103}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1938__5__1_0/} }
Trjitzinsky, W. J. Non-linear difference equations. Compositio Mathematica, Tome 5 (1938), pp. 1-66. http://geodesic.mathdoc.fr/item/CM_1938__5__1_0/