%0 Journal Article
%A Michel Hebert
%T Algebraically closed and existentially closed substructures in 
categorical context
%J Theory and applications of categories
%D 2004
%P 269-298
%V 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TAC_2004_12_a8/
%G en
%F TAC_2004_12_a8