Wyniki
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Christmas trees : on free cyclic algebras in some varieties of closure algebras
Leo Esakia, Revaz Grigolia
Bulletin of the Section of Logic , 4 /3 (1975) s. 95-100 -
The criterion of Brouwerian and closure algebras to be finitely generated
Leo Esakia, Revaz Grigolia
Bulletin of the Section of Logic , 6 /2 (1977) s. 46-52