Grigoriev, P. A.
Article History
Received: 30 November 2021
Revised: 10 December 2021
Accepted: 12 December 2021
First Online: 29 June 2022
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The author declares that he has no conflicts of interest.
: <i>Statement on the welfare of humans or animals</i>. This article does not contain any studies involving animals performed by the author.