@article{ZNSL_1978_78_a13,
     author = {M. M. Popov},
     title = {Examples of exactly solvable scattering problems for the parabolic equation of diffraction theory},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {184--202},
     publisher = {mathdoc},
     volume = {78},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1978_78_a13/}
}