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@article{AM2_1982__24_136935, author = {Carl C. Cowen}, title = {Analytic solutions of {B\"ottcher's} functional equation in the unit disk.}, journal = {Aequationes mathematicae}, pages = {187--194}, publisher = {mathdoc}, volume = {24}, year = {1982}, zbl = {0526.30033}, url = {http://geodesic.mathdoc.fr/item/AM2_1982__24_136935/} }
Carl C. Cowen. Analytic solutions of Böttcher's functional equation in the unit disk.. Aequationes mathematicae, Tome 24 (1982), pp. 187-194. http://geodesic.mathdoc.fr/item/AM2_1982__24_136935/