%0 Journal Article
%A Vopěnka, Petr
%T Concerning a proof of $\aleph_{\alpha+1}\leq 2^{\aleph_\alpha}$ without axiom of choice
%J Commentationes Mathematicae Universitatis Carolinae
%D 1965
%P 111-113
%V 06
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1965__6_1_a12/
%G en
%F CMUC_1965__6_1_a12