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@article{AM2_1978__17_136734, author = {W.T. Tutte}, title = {On a pair of functional equations of combinatorial interest.}, journal = {Aequationes mathematicae}, pages = {121--140}, publisher = {mathdoc}, volume = {17}, year = {1978}, zbl = {0377.05025}, url = {http://geodesic.mathdoc.fr/item/AM2_1978__17_136734/} }
W.T. Tutte. On a pair of functional equations of combinatorial interest.. Aequationes mathematicae, Tome 17 (1978), pp. 121-140. http://geodesic.mathdoc.fr/item/AM2_1978__17_136734/