\Bibitem{TsaSha99} \by I.~G.~Tsar'kov, E.~T.~Shavgulidze \paper Smooth Isometric Immersions into the Infinite-Dimensional Sphere \jour Funktsional. Anal. i Prilozhen. \yr 1999 \vol 33 \issue 3 \pages 93--95 \mathnet{http://mi.mathnet.ru/faa376} \crossref{https://doi.org/10.4213/faa376} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1724278} \zmath{https://zbmath.org/?q=an:0949.46005} \transl \jour Funct. Anal. Appl. \yr 1999 \vol 33 \issue 3 \pages 239--240 \crossref{https://doi.org/10.1007/BF02465213} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000084499000013}