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"Undefinability of propositional quantifiers in the modal system S4."
Silvio Ghilardi, Marek W. Zawadowski (1995)
- Silvio Ghilardi, Marek W. Zawadowski:
Undefinability of propositional quantifiers in the modal system S4. Stud Logica 55(2): 259-271 (1995)
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