\Bibitem{Ast99} \by S.~V.~Astashkin \paper Multiple Rademacher Series in Rearrangement Invariant Spaces \jour Funktsional. Anal. i Prilozhen. \yr 1999 \vol 33 \issue 2 \pages 73--76 \mathnet{http://mi.mathnet.ru/faa356} \crossref{https://doi.org/10.4213/faa356} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1719310} \zmath{https://zbmath.org/?q=an:0944.42019} \transl \jour Funct. Anal. Appl. \yr 1999 \vol 33 \issue 2 \pages 141--143 \crossref{https://doi.org/10.1007/BF02465195} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000083394900007}