%0 Journal Article %A Zh. N. Kudryasheva %T The solution of the problem of the motion of a conservative impurity in a river with a bed of arbitrary configuration %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1993 %P 1054-1065 %V 33 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1993_33_7_a6/ %G ru %F ZVMMF_1993_33_7_a6