%0 Journal Article %A I. L. Verbitskii %A N. Z. Remez %T On the theory of two-dimensional waveguide transitions %J Doklady Akademii Nauk %D 1977 %P 323-326 %V 233 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_233_2_a16/ %G ru %F DAN_1977_233_2_a16