%0 Journal Article %A G. F. Gromyko %T Finite-difference methods of variable directions type for solving nonstationary transport equations %J Differencialʹnye uravneniâ %D 1992 %P 1198-1204 %V 28 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_7_a11/ %G ru %F DE_1992_28_7_a11