@article{GDZPPN002035251, title = {A family of symmetric biadditive nonbilinear functions.}, journal = {Aequationes mathematicae}, volume = {28}, year = {1985}, pages = {14-18}, zbl = {0596.15026}, url = {http://dml.mathdoc.fr/item/GDZPPN002035251} }
Heuvers, Konrad D. A family of symmetric biadditive nonbilinear functions.. Aequationes mathematicae, Tome 28 (1985) pp. 14-18. http://gdmltest.u-ga.fr/item/GDZPPN002035251/