%0 Journal Article %A A. D. Chernyshov %T Exact solutions of the problem of the oscillations of complex fields in an angular domain %J Differencialʹnye uravneniâ %D 1998 %P 425-427 %V 34 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_3_a20/ %G ru %F DE_1998_34_3_a20