Kilin, Alexander A. http://orcid.org/0000-0003-1358-5960
Pivovarova, Elena N. http://orcid.org/0000-0001-7779-7183
Funding for this research was provided by:
Ural Mathematical Center
Ministry of Science and Higher Education of Russia (FEWS-2020-0009)
Moebius Contest Foundation for Young Scientists
Article History
Received: 5 August 2020
Accepted: 12 December 2020
First Online: 7 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.