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R. A. Bull. A note on the modal calculi S4.2 and S4.3. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 10 (1964), pp. 53–55. - R. A. Bull. A class of extensions of the modal system S4 with the finite model property. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 11 (1965), pp. 127–132. - R. A. Bull. That all normal extensions of S4.3 have the finite model property. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 12 (1966), pp. 341–344.
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R. A. Bull. A note on the modal calculi S4.2 and S4.3. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 10 (1964), pp. 53–55.
R. A. Bull. A class of extensions of the modal system S4 with the finite model property. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 11 (1965), pp. 127–132.
R. A. Bull. That all normal extensions of S4.3 have the finite model property. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 12 (1966), pp. 341–344.
Published online by Cambridge University Press:
12 March 2014
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