@article{GDZPPN00202344X, title = {On a 'Cube Functional Equation'.}, journal = {Aequationes mathematicae}, volume = {2}, year = {1969}, pages = {156-159}, zbl = {0179.21203}, url = {http://dml.mathdoc.fr/item/GDZPPN00202344X} }
Haruki, Hiroshi. On a 'Cube Functional Equation'.. Aequationes mathematicae, Tome 2 (1969) pp. 156-159. http://gdmltest.u-ga.fr/item/GDZPPN00202344X/