%0 Journal Article
%A Chen, Xiangdong
%T On binary coproducts of frames
%J Commentationes Mathematicae Universitatis Carolinae
%D 1992
%P 699-712
%V 33
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1992__33_4_a15/
%G en
%F CMUC_1992__33_4_a15