\RBibitem{Cha94} \by А.~А.~Чашка \paper Флуктуации в~мартингалах \jour УМН \yr 1994 \vol 49 \issue 2(296) \pages 179--180 \mathnet{http://mi.mathnet.ru/rm1193} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1283156} \zmath{https://zbmath.org/?q=an:0823.60038} \adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?1994RuMaS..49..148C} \transl \jour Russian Math. Surveys \yr 1994 \vol 49 \issue 2 \pages 148--150 \crossref{https://doi.org/10.1070/RM1994v049n02ABEH002216} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1994QR68600007}