%0 Journal Article %A Mustapha Esseghyr Hryrou %A Samir Kabbaj %T On a Generalized Drygas Functional Equation and its Approximate Solutions in $2$-Banach Spaces %J Kragujevac Journal of Mathematics %D 2023 %P 801 %V 47 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/KJM_2023_47_5_a9/ %G en %F KJM_2023_47_5_a9