\Bibitem{Mya84} \by A.~G.~Myasnikov \paper Extended Nielsen transformations and triviality of a group \jour Mat. Zametki \yr 1984 \vol 35 \issue 4 \pages 491--495 \mathnet{http://mi.mathnet.ru/mzm5729} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=744511} \zmath{https://zbmath.org/?q=an:0573.20029} \transl \jour Math. Notes \yr 1984 \vol 35 \issue 4 \pages 258--261 \crossref{https://doi.org/10.1007/BF01139985} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1984TY55400017}