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@article{AM2_1981__22_136849, author = {L. Sweet}, title = {On the generalized cube and octahedron functional equations.}, journal = {Aequationes mathematicae}, pages = {29--38}, publisher = {mathdoc}, volume = {22}, year = {1981}, zbl = {0475.39016}, url = {http://geodesic.mathdoc.fr/item/AM2_1981__22_136849/} }
L. Sweet. On the generalized cube and octahedron functional equations.. Aequationes mathematicae, Tome 22 (1981), pp. 29-38. http://geodesic.mathdoc.fr/item/AM2_1981__22_136849/