\Bibitem{Yas94} \by A.~D.~Yashin \paper The Smetanich logic $T^{\Phi}$ and two definitions of a new intuitionistic connective \jour Mat. Zametki \yr 1994 \vol 56 \issue 1 \pages 135--142 \mathnet{http://mi.mathnet.ru/mzm2232} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=1309828} \zmath{https://zbmath.org/?q=an:0837.03006} \transl \jour Math. Notes \yr 1994 \vol 56 \issue 1 \pages 745--750 \crossref{https://doi.org/10.1007/BF02110566} \isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1994RH68200015}