%0 Journal Article %A N. N. Vorob'ev %T A new algorithm of derivability in a constructive calculus of statements %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1958 %P 193-225 %V 52 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1958_52_a6/ %G ru %F TM_1958_52_a6