%0 Journal Article %A V. Pokrovskii %A F. Ulinich %A S. Savvinykh %T Local reflection in wave guides of variable section %J Doklady Akademii Nauk %D 1958 %P 504-506 %V 120 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_120_3_a17/ %G ru %F DAN_1958_120_3_a17