MODAL LOGIC

RUDOLF CARNAP: MEANING AND NECESSITY

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SAUL KRIPKE: A NAMING AND NECESSITY

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SAUL KRIPKE: A COMPLETENESS THEOREM IN MODAL LOGIC

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SAUL KRIPKE: SEMANTICAL ANALYSIS OF MODAL LOGIC

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BLACKBURN, DE RIJKE: MODAL LOGIC

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BLACKBUR, ED: HANDBOOK OF MODAL LOGIC

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EDWARD ZALTA: BASIC CONCEPTS IN MODAL LOGIC

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HUGHES, ED: A COMPANION TO MODAL LOGIC

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SAUL KRIPKE: ELEMENTARY RECURSION THEORY AND ITS APPLICATIONS TO FORMAL SYSTEMS

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