\Bibitem{LipShi65} \by R.~{\v S}.~Lipcer, A.~N.~{\v S}iryaev \paper On a~Bayes Problem of Sequential Search in Diffusion Approximation \jour Teor. Veroyatnost. i Primenen. \yr 1965 \vol 10 \issue 1 \pages 192--199 \mathnet{http://mi.mathnet.ru/tvp457} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=176581} \zmath{https://zbmath.org/?q=an:0133.41702} \transl \jour Theory Probab. Appl. \yr 1965 \vol 10 \issue 1 \pages 178--186 \crossref{https://doi.org/10.1137/1110023}