%0 Journal Article %A L. A. Nazarov %T Wave propagation in media with thin layers %J Doklady Akademii Nauk %D 1989 %P 824-828 %V 307 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_307_4_a12/ %G ru %F DAN_1989_307_4_a12