@article{DE_1995_31_9_a13,
     author = {Yu. V. Gandel' and I. K. Lifanov and T. S. Polyanskaya},
     title = {On a justification of the method of discrete singularities in two-dimensional diffraction problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1536--1541},
     publisher = {mathdoc},
     volume = {31},
     number = {9},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_9_a13/}
}