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@article{10_4064_ap_6_3_281_287, author = {M. Kuczma}, title = {On the functional equation {\ensuremath{\varphi}(x)+\ensuremath{\varphi}[f(x)]=F(x)}}, journal = {Annales Polonici Mathematici}, pages = {281--287}, publisher = {mathdoc}, volume = {6}, number = {3}, year = {1959}, doi = {10.4064/ap-6-3-281-287}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-6-3-281-287/} }
M. Kuczma. On the functional equation φ(x)+φ[f(x)]=F(x). Annales Polonici Mathematici, Tome 6 (1959) no. 3, pp. 281-287. doi : 10.4064/ap-6-3-281-287. http://geodesic.mathdoc.fr/articles/10.4064/ap-6-3-281-287/
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