\Bibitem{1} \paper Foreword \jour Regul. Chaotic Dyn. \yr 2018 \vol 23 \issue 5 \pages 503--506 \mathnet{http://mi.mathnet.ru/rcd340} \crossref{https://doi.org/10.1134/S1560354718050015} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000447268600001} \scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85054633746}