%0 Journal Article %A N. Ya. Kirpichnikova %A M. M. Popov %T Ray method applied to the plane wave diffraction by ``thin'' cone with small angle at the apex %J Zapiski Nauchnykh Seminarov POMI %D 2012 %P 49-54 %V 409 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2012_409_a3/ %G ru %F ZNSL_2012_409_a3