%0 Journal Article %A V. E. Mirakov %T The majorant principle and the method of tangent parabolas for non-linear functional equations %J Doklady Akademii Nauk %D 1957 %P 977-979 %V 113 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_113_5_a7/ %G ru %F DAN_1957_113_5_a7