%0 Journal Article
%A Levitz, Hilbert
%T The Cartesian product of sets and the Hessenberg natural product of ordinals
%J Czechoslovak Mathematical Journal
%D 1979
%P 353-358
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101618/
%R 10.21136/CMJ.1979.101618
%G en
%F 10_21136_CMJ_1979_101618