%0 Journal Article %A A. M. Nakhushev %T An approximate method for solving boundary value problems for differential equations and its application to the dynamics of ground moisture and ground water %J Differencialʹnye uravneniâ %D 1982 %P 72-81 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_1_a7/ %G ru %F DE_1982_18_1_a7