TY - JOUR AU - Dominique Bourn AU - George Janelidze TI - Characterization of protomodular varieties of universal algebras JO - Theory and applications of categories PY - 2003 SP - 143 EP - 147 VL - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2003_11_a5/ LA - en ID - TAC_2003_11_a5 ER -