1. The type theoretic interpretation of constructive set theory;Aczel,1978
2. Exact categories;Barr,1971
3. Toposes, Triples and Theories;Barr,1985
4. Handbook of Categorical Algebra. Vol. 2, Categories and Structures;Borceux,1994
5. Locally cartesian closed exact completions;Carboni;J. Pure Appl. Algebra,2000