%0 Journal Article %A Vadim Cebotari %T A criterion for parametrical completeness in the 8-valued algebraic model of modal logic~$S5$ %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2010 %P 59-66 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2010_2_a3/ %G en %F BASM_2010_2_a3