%0 Journal Article %A Voutsadakis, George %T Categorical Abstract Algebraic Logic: Referential π-Institutions %J Bulletin of the Section of Logic %D 2015 %V 44 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/BSL_2015_44_1-2_a2/ %F BSL_2015_44_1-2_a2