Frolov, Andrey
Zubkov, Maxim
Funding for this research was provided by:
Mathematical Center in Akademgorodok (075-15-2019-1613)
Russian Science Foundation (18-11-00028)
Volga Region Mathematical Center (075-02-2020-1478)
Article History
Received: 14 February 2023
Accepted: 16 May 2024
First Online: 16 August 2024