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"A modal natural deduction system for S4."

O. A. Robinson (1979)

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DOI: 10.1305/NDJFL/1093882670

access: closed

type: Journal Article

metadata version: 2020-05-21

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O. A. Robinson:
A modal natural deduction system for S4. Notre Dame J. Formal Log. 20(3): 625-627 (1979)

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