%0 Journal Article %A Dominique Bourn %T Internal profunctors and commutator theory; applications to extensions classification and categorical Galois Theory %J Theory and applications of categories %D 2010 %P 451-488 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2010_24_a16/ %G en %F TAC_2010_24_a16