For citations:
Krasnov A.E., Nadezhdin E.N., Nikolsky D.N., Galyaev V.S. . Chebyshevskii Sbornik. 2018;19(2):217-233. (In Russ.) https://doi.org/10.22405/2226-8383-2018-19-2-217-233
Krasnov A.E., Nadezhdin E.N., Nikolsky D.N., Galyaev V.S. . Chebyshevskii Sbornik. 2018;19(2):217-233. (In Russ.) https://doi.org/10.22405/2226-8383-2018-19-2-217-233