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@article{AM2_1972__8_136296, author = {J.D. Becker and E.T. Ordman}, title = {On {Functions} {Defined} by {Iterations} of {Each} {Other.}}, journal = {Aequationes mathematicae}, pages = {238--241}, publisher = {mathdoc}, volume = {8}, year = {1972}, zbl = {0257.39002}, url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136296/} }
J.D. Becker; E.T. Ordman. On Functions Defined by Iterations of Each Other.. Aequationes mathematicae, Tome 8 (1972), pp. 238-241. http://geodesic.mathdoc.fr/item/AM2_1972__8_136296/