1. Explicit substitutions;Abadi;J. Funct. Program.,1991
2. Type-and-scope safe programs and their proofs;Allais,2017
3. Monadic presentations of lambda terms using generalized inductive types;Altenkirch,1999
4. Mechanized metatheory for the masses: the poplmark challenge;Aydemir,2005
5. The Lambda Calculus;Barendregt,1984