%0 Journal Article %A Nikoufar, Ismail %T Approximate tri-quadratic functional equations via Lipschitz conditions %J Mathematica Bohemica %D 2017 %P 337-344 %V 142 %N 4 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/MB.2017.0028-16/ %R 10.21136/MB.2017.0028-16 %G en %F 10_21136_MB_2017_0028_16