\Bibitem{Bul98} \by V.~K.~Bulitko \paper Recursively compressible sets \jour Mat. Zametki \yr 1998 \vol 64 \issue 1 \pages 9--16 \mathnet{http://mi.mathnet.ru/mzm1367} \crossref{https://doi.org/10.4213/mzm1367} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1694018} \zmath{https://zbmath.org/?q=an:0919.03038} \transl \jour Math. Notes \yr 1998 \vol 64 \issue 1 \pages 8--14 \crossref{https://doi.org/10.1007/BF02307190} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000078147600002}