@article{DAN_1980_252_3_a3,
     author = {V. D. Koshmanenko},
     title = {Spectral resolutions in the scattering problem with a singular perturbation},
     journal = {Doklady Akademii Nauk},
     pages = {531--535},
     publisher = {mathdoc},
     volume = {252},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a3/}
}