1. Handbook of Categorial Algebra;Borceux,1994
2. Coalgebra semantics for hidden algebra: parameterised objects and inheritance;Círstea,1998
3. A coequational approach to specifying behaviours;Ciírstea,1999
4. A complete calculus for equational deduction in coalgebraic specification;Corradini,1998
5. From SOS specifications to structured coalgebras: How to make bisimulation a congruence;Corradini,1999