%0 Journal Article %A N. K. Vereshchagin %A D. P. Skvortsov %A E. Z. Skvortsova %A A. V. Chernov %T Variants of Realizability for Propositional Formulas and the Logic of Weak Excluded Middle %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2003 %P 77-97 %V 242 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2003_242_a5/ %G ru %F TM_2003_242_a5