\Bibitem{GorMok01} \by M.~L.~Gorbachuk, Yu.~G.~Mokrousov \paper Conditions for Subspaces of Analytic Vectors of a Closed Operator in a Banach Space to Be Dense \jour Funktsional. Anal. i Prilozhen. \yr 2001 \vol 35 \issue 1 \pages 77--80 \mathnet{http://mi.mathnet.ru/faa234} \crossref{https://doi.org/10.4213/faa234} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1840751} \zmath{https://zbmath.org/?q=an:1032.47002} \elib{https://elibrary.ru/item.asp?id=5021954} \transl \jour Funct. Anal. Appl. \yr 2001 \vol 35 \issue 1 \pages 64--66 \crossref{https://doi.org/10.1023/A:1004128701887} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000170157300008} \scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-0035628232}