%0 Journal Article
%A A.R. Garzon
%A E.M. Vitale
%T On the second cohomology categorical group and a Hochschild-Serre 2-exact sequence
%J Theory and applications of categories
%D 2015
%P 933-984
%V 30
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TAC_2015_30_a26/
%G en
%F TAC_2015_30_a26