1. A categorical approach to realizability and polymorphic types;Carboni,1987
2. Recursive types reduced to inductive types;Freyd,1990
3. The effective topos;Hyland,1982
4. Generalized Banach-Mazur functionals in the topos of recursive sets;Mulry;J. Pure Appl. Algebra,1982
5. Continuity and Effectiveness in Topoi;Rosolini,1986