%0 Journal Article
%A Gardner, Barry J.
%T Ring varieties closed under ideal sums
%J Commentationes Mathematicae Universitatis Carolinae
%D 1977
%P 569-578
%V 18
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1977__18_3_a14/
%G en
%F CMUC_1977__18_3_a14