%0 Journal Article
%A Loureiro, Isabel
%T Homomorphism kernels of a tetravalent modal algebra
%J Portugaliae mathematica
%D 1980
%P 371-379
%V 39
%N 1-4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1980__39_1-4_115427/
%G en
%F PORMA_1980__39_1-4_115427