@article{TMF_2021_207_1_a4, author = {V. V. Pupyshev}, title = {Low-energy asymptotics of the~phases of two-dimensional scattering of}, journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika}, pages = {72--98}, year = {2021}, volume = {207}, number = {1}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TMF_2021_207_1_a4/} }