%0 Journal Article %A M. V. Patlasov %T Propositional formulas closed in the~minimal calculus %J Fundamentalʹnaâ i prikladnaâ matematika %D 2000 %P 1155-1191 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2000_6_4_a13/ %G ru %F FPM_2000_6_4_a13