Wyniki
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Paraconsistent sequential calculi
Vladimir M. Popov
Bulletin of the Section of Logic , 17 /3-4 (1988) s. 148-158 -
On a closure of a set of classically essential formulas and on relevant implication
Vladimir M. Popov
Bulletin of the Section of Logic , 18 /1 (1989) s. 20-24