%0 Journal Article
%A Tzouvaras, Athanossios
%T Definability degrees for classes in the alternative set theory
%J Commentationes Mathematicae Universitatis Carolinae
%D 1988
%P 41-48
%V 29
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1988__29_1_a3/
%G en
%F CMUC_1988__29_1_a3