@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},
     publisher = {mathdoc},
     volume = {207},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2021_207_1_a4/}
}