%0 Journal Article %A I. A. Nicolaev %A A. I. Sukhinov %T Additive schemes for the modeling of three-dimensional equations of heat conduction in cylindrical and spherical coordinates %J Differencialʹnye uravneniâ %D 1987 %P 2122-2132 %V 23 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1987_23_12_a13/ %G ru %F DE_1987_23_12_a13