@article{ZNSL_2012_409_a3,
     author = {N. Ya. Kirpichnikova and M. M. Popov},
     title = {Ray method applied to the plane wave diffraction by {\textquotedblleft}thin{\textquotedblright} cone with small angle at the apex},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {49--54},
     year = {2012},
     volume = {409},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2012_409_a3/}
}