%0 Journal Article %A G. A. Iosif'yan %A O. A. Oleinik %A A. S. Shamaev %T Averaging elliptic equations that describe processes in stratified media %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1986 %P 209-210 %V 41 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1986_41_3_a11/ %G en %F RM_1986_41_3_a11