1. Domain theory;Abramsky,1994
2. Free algebras and automata realizations in the language of categories;Adámek;Commentationes Mathematicae Universitatis Carolinae,1974
3. Automata and Algebras in Categories;Adámek,1990
4. Toposes, Triples and Theories;Barr,1985
5. Handbook of Categorical Algebra~2: Categories and Structures;Borceux,1994