@article{RM_1963_18_5_a25,
     author = {A. L. Chistyakov},
     title = {On multi-channel scattering},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1963_18_5_a25/}
}