Solomadin, Grigory http://orcid.org/0000-0003-1136-9770
Funding for this research was provided by:
RUDN University (Program 5-100)
RFBR (20-01-00675A)
Young Mathematics of Russia
Article History
Received: 13 September 2021
Revised: 30 December 2021
Accepted: 23 March 2022
First Online: 22 April 2022