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@article{AM2_1982__25_136950, author = {H.W. Engl}, title = {An analytic representation for selfmaps of a countably infinite set and its cycles.}, journal = {Aequationes mathematicae}, pages = {90--96}, publisher = {mathdoc}, volume = {25}, year = {1982}, zbl = {0519.39006}, url = {http://geodesic.mathdoc.fr/item/AM2_1982__25_136950/} }
H.W. Engl. An analytic representation for selfmaps of a countably infinite set and its cycles.. Aequationes mathematicae, Tome 25 (1982), pp. 90-96. http://geodesic.mathdoc.fr/item/AM2_1982__25_136950/