1. Aschieri, F.: Una caratterizzazione dei lambda termini non fortemente normalizzabili. Master Degree Thesis, Università degli Studi di Verona (2007)
2. Biasi, C., Aschieri, F.: A Term Assignment for Polarized Bi-Intuitionistic Logic and its Strong Normalization. Fundamenta Informaticae 84(02) (2008)
3. Dal Lago, U., Zorzi, M.: Probabilistic Operational Semantics for the Lambda Calculus. RAIRO-ITA 46(03), 413–450 (2012), doi:10.1051/ita/2012012
4. David, R., Nour, K.: A short proof of the strong normalization of the simply typed lambda-mu-calculus. Schedae Informaticae 12, 27–34 (2003)
5. de’ Liguoro, U., Piperno, A.: Non-Deterministic Extensions of Untyped Lambda-Calculus. Information and Computation 122, 149–177 (1995)