@article{GDZPPN002032872, title = {On the generalized cube and octahedron functional equations.}, journal = {Aequationes mathematicae}, volume = {22}, year = {1981}, pages = {29-38}, zbl = {0475.39016}, url = {http://dml.mathdoc.fr/item/GDZPPN002032872} }
Sweet, L. On the generalized cube and octahedron functional equations.. Aequationes mathematicae, Tome 22 (1981) pp. 29-38. http://gdmltest.u-ga.fr/item/GDZPPN002032872/