1. Full abstraction in the lazy lambda calculus;Abramsky;Inform. and Comput.,1993
2. Term Rewriting and All That;Baader,1998
3. Some Extensional Term Models for Combinatory Logics and λ-calculi;Barendregt,1971
4. The Lambda Calculus, its Syntax and Semantics;Barendregt,1984