1. Handbook of Logic in Computer Science, Volume 2: Background: Computational Structures,1992
2. Applicative Common Lisp;ACL2,2000
3. On relating type theories and set theories;Aczel,1999
4. A system for incrementally developing proofs and programs;Agda,2000
5. International Workshop TYPES '98, Kloster Irsee, Germany, 1998: selected papers,1999