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@article{AM2_1977__15_136626, author = {Halina Swiatak}, title = {On alternative functional equations.}, journal = {Aequationes mathematicae}, pages = {35--48}, publisher = {mathdoc}, volume = {15}, year = {1977}, zbl = {0348.39010}, url = {http://geodesic.mathdoc.fr/item/AM2_1977__15_136626/} }
Halina Swiatak. On alternative functional equations.. Aequationes mathematicae, Tome 15 (1977), pp. 35-48. http://geodesic.mathdoc.fr/item/AM2_1977__15_136626/