%0 Journal Article %A E. A. Ivanov %T A general mixed problem of diffraction of a plane electromagnetic wave falling obliquely on a circular opening in a flat screen between two media %J Differencialʹnye uravneniâ %D 1986 %P 298-304 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_2_a14/ %G ru %F DE_1986_22_2_a14