%0 Journal Article
%A Solomon Feferman
%T Two notes on abstract model theory. I. Properties invariant on the range of definable relations between structures
%J Fundamenta Mathematicae
%D 1974
%P 153-165
%V 82
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-82-2-153-165/
%R 10.4064/fm-82-2-153-165
%G en
%F 10_4064_fm_82_2_153_165