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@article{AM2_1970__4_1-3_136077, author = {R. Larsen}, title = {The {Functional} {Equation.} {(Short} {Communication).}}, journal = {Aequationes mathematicae}, pages = {277--277}, publisher = {mathdoc}, volume = {4}, number = {1-3}, year = {1970}, zbl = {0898.20025}, url = {http://geodesic.mathdoc.fr/item/AM2_1970__4_1-3_136077/} }
R. Larsen. The Functional Equation. (Short Communication).. Aequationes mathematicae, Tome 4 (1970) no. 1-3, p. 277. http://geodesic.mathdoc.fr/item/AM2_1970__4_1-3_136077/