@article{ZNSL_1978_78_a4,
     author = {N. S. Grigor'ev},
     title = {Diffraction of short waves by a segment},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {60--89},
     publisher = {mathdoc},
     volume = {78},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1978_78_a4/}
}