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@article{AM2_1976__14_136560, author = {F.J. Papp}, title = {The functional equation f(xy) = ff(x) xy ff(y) in a partially ordered monoid.}, journal = {Aequationes mathematicae}, pages = {33--36}, publisher = {mathdoc}, volume = {14}, year = {1976}, zbl = {0322.39022}, url = {http://geodesic.mathdoc.fr/item/AM2_1976__14_136560/} }
F.J. Papp. The functional equation f(xy) = ff(x) xy ff(y) in a partially ordered monoid.. Aequationes mathematicae, Tome 14 (1976), pp. 33-36. http://geodesic.mathdoc.fr/item/AM2_1976__14_136560/