%0 Journal Article %A M. M. Popov %T Examples of exactly solvable scattering problems for the parabolic equation of diffraction theory %J Zapiski Nauchnykh Seminarov POMI %D 1978 %P 184-202 %V 78 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1978_78_a13/ %G ru %F ZNSL_1978_78_a13