%0 Journal Article %A Hassan Attiya Hussain %T Estimation of the exponential growth of the solutions of certain linear partial differential equations with a highest order term %J Differencialʹnye uravneniâ %D 1976 %P 2279-2280 %V 12 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_12_a21/ %G ru %F DE_1976_12_12_a21