\Bibitem{1} \paper Vagif Sabir oglu Guliyev (to the 65th birthday) \jour Eurasian Math. J. \yr 2022 \vol 13 \issue 1 \pages 8 \mathnet{http://mi.mathnet.ru/emj427} \mathscinet{https://mathscinet.ams.org/mathscinet-getitem?mr=4407200}