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  1. Modal Logics in the Vicinity of S.Brian F. Chellas & Krister Segerberg - 1996 - Notre Dame Journal of Formal Logic 37 (1):1-24.
    We define prenormal modal logics and show that S1, S1, S0.9, and S0.9 are Lewis versions of certain prenormal logics, determination and decidability for which are immediate. At the end we characterize Cresswell logics and ponder C. I. Lewis's idea of strict implication in S1.
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  • The axiomatization of S. Jaśkowski's discussive system.Jerzy Kotas - 1974 - Studia Logica 33 (2):195-200.
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  • Remarks on Perzanowski's modal system'.J. J. Blaszczuk & W. Dziobiak - 1975 - Bulletin of the Section of Logic 4 (2):57-64.
    This paper was presented at the Seminar of the Section of Logic, In- stitute of Mathematics Nicholas Copernicus University, held by Professor Jerzy Kotas, Torun, March 1975. An altered version of the paper will be published in Studia Logica.
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  • Modal logics connected with systems S4n of Sobociński.Jerzy J. Blaszczuk & Wieslaw Dziobiak - 1977 - Studia Logica 36 (3):151-164.
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  • A comparison of two approaches to parainconsistency: Flemish and Polish.Marek Nasieniewski - 2001 - Logic and Logical Philosophy 9:47.
    In this paper we present a comparison of certain inconsistencyadaptive logics and Jaśkowski’s logic.
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