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  1. (1 other version)Modal Logics Between S 4 and S 5.M. A. E. Dummett & E. J. Lemmon - 1959 - Mathematical Logic Quarterly 5 (14-24):250-264.
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  • Embeddings of classical logic in S4.J. Czermak - 1975 - Studia Logica 34 (1):87-100.
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  • (1 other version)An Introduction to Modal Logic.R. A. Bull - 1971 - Journal of Symbolic Logic 36 (2):328-328.
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  • An embedding of classical logic in S4.Melvin Fitting - 1970 - Journal of Symbolic Logic 35 (4):529-534.
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