@article{ZNSL_1983_127_a3,
     author = {E. M. Il'in},
     title = {Scattering by non-compact obstacles},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {68--74},
     publisher = {mathdoc},
     volume = {127},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1983_127_a3/}
}