@article{ZVMMF_1972_12_1_a8,
     author = {A. A. Arsen'ev},
     title = {The singularities of the analytic continuation and resonance properties of the solution of the scattering problem for the {Helmholtz} equation},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {112--138},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1972_12_1_a8/}
}