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@article{AM2_1985__28_137064, author = {Pl. Kannappan}, title = {On a generalization of sum form functional equation - {V.}}, journal = {Aequationes mathematicae}, pages = {255--261}, publisher = {mathdoc}, volume = {28}, year = {1985}, zbl = {0571.39006}, url = {http://geodesic.mathdoc.fr/item/AM2_1985__28_137064/} }
Pl. Kannappan. On a generalization of sum form functional equation - V.. Aequationes mathematicae, Tome 28 (1985), pp. 255-261. http://geodesic.mathdoc.fr/item/AM2_1985__28_137064/