%0 Journal Article %A S. Benarab %T Two-sided estimates for solutions of boundary value problems for implicit differential equations %J Vestnik rossijskih universitetov. Matematika %D 2021 %P 216-220 %V 26 %N 134 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTAMU_2021_26_134_a7/ %G ru %F VTAMU_2021_26_134_a7