Gimadiev, R. Sh.
Khaliulin, V. I.
Levshonkov, N. V.
Article History
Received: 17 December 2019
Revised: 19 February 2020
Accepted: 19 February 2020
First Online: 16 September 2020
Change Date: 9 November 2020
Change Type: Update
Change Details: The TeX presentation of formulas was updated in HTML file.
Change Date: 3 December 2020
Change Type: Erratum
Change Details: An Erratum to this paper has been published:
Change Details: https://doi.org/10.3103/S1068799820030241