1. Andreas Abel. 2013. Normalization by Evaluation: Dependent Types and Impredicativity. Habilitation thesis. Universität München. Andreas Abel. 2013. Normalization by Evaluation: Dependent Types and Impredicativity. Habilitation thesis. Universität München.
2. Andreas Abel and Thierry Coquand. 2019. Failure of Normalization in Impredicative Type Theory with Proof-Irrelevant Propositional Equality. arXiv:1911.08174 [cs.LO] Andreas Abel and Thierry Coquand. 2019. Failure of Normalization in Impredicative Type Theory with Proof-Irrelevant Propositional Equality. arXiv:1911.08174 [cs.LO]
3. Normalization by Evaluation for Call-By-Push-Value and Polarized Lambda Calculus
4. Thorsten Altenkirch and Conor Mcbride. 2006. Towards observational type theory. Thorsten Altenkirch and Conor Mcbride. 2006. Towards observational type theory.