\Bibitem{Fre87} \by R.~V.~Freivald \paper On the Operating Time of Probabilistic Errorless Turing Machines \jour Teor. Veroyatnost. i Primenen. \yr 1987 \vol 32 \issue 3 \pages 565--567 \mathnet{http://mi.mathnet.ru/tvp1453} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=914948} \zmath{https://zbmath.org/?q=an:0643.68061|0633.68035} \transl \jour Theory Probab. Appl. \yr 1987 \vol 32 \issue 3 \pages 514--516 \crossref{https://doi.org/10.1137/1132073} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1988P307400014}