@article{DE_1990_26_5_a13,
     author = {V. S. Serov},
     title = {On the scattering problem for the {Schr\"odinger} operator with singular potential in the two-dimensional case. {I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {851--860},
     publisher = {mathdoc},
     volume = {26},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_5_a13/}
}