@article{ZNSL_2000_264_a0,
     author = {V. M. Babich and D. B. Dement'ev and B. A. Samokish and V. P. Smyshlyaev},
     title = {Scattering of a highfrequency wave by the vertex of an arbitrary cone. {(Singular} directions.)},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {7--21},
     year = {2000},
     volume = {264},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2000_264_a0/}
}