%0 Journal Article %A P. K. Senatorov %T Coefficient stability of the solutions of second order ordinary differential equations and of parabolic equations on the plane %J Differencialʹnye uravneniâ %D 1971 %P 754-758 %V 7 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1971_7_4_a16/ %G ru %F DE_1971_7_4_a16