@article{DE_1969_5_3_a10,
     author = {M. V. Fedoryuk},
     title = {Analytic properties of the scattering amplitude in the one-dimensional case. {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {507--517},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_3_a10/}
}