1. Exact categories;Barr,1971
2. Central reflections and nilpotency in exact Mal'cev categories;Berger;J. Homotopy Relat. Struct.,2016
3. Mal'cev, Protomodular, Homological and Semi-Abelian Categories;Borceux,2004
4. Normalization equivalence, kernel equivalence and affine categories;Bourn,1991
5. Mal'cev categories and fibration of pointed objects;Bourn;Appl. Categ. Struct.,1996