%0 Journal Article %A N. A. Razumovskii %T Excitation of normal modes of a weakly inhomogeneous waveguide by a point source %J Zapiski Nauchnykh Seminarov POMI %D 1984 %P 174-178 %V 140 %U http://geodesic.mathdoc.fr/item/ZNSL_1984_140_a15/ %G ru %F ZNSL_1984_140_a15