%0 Journal Article %A E. A. Ivanov %T A problem on the diffraction of a dipole field by a circular opening in a plane screen in the presence of a circular disc coaxial with it %J Differencialʹnye uravneniâ %D 1970 %P 1552-1561 %V 6 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_9_a1/ %G ru %F DE_1970_6_9_a1