%0 Journal Article
%A V. K. Zakharov
%A A. V. Mikhalev
%T A~two-sorted theory of classes and sets, admitting sets of propositional formulas
%J Fundamentalʹnaâ i prikladnaâ matematika
%D 1999
%P 417-435
%V 5
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FPM_1999_5_2_a4/
%G ru
%F FPM_1999_5_2_a4