1. Abella: A System for Reasoning about Relational Specifications;Baelde David;Journal of Formalized Reasoning,2014
2. Andrew Gacek . 2009. A Framework for Specifying, Prototyping, and Reasoning about Computational Systems. Ph. D. Dissertation . University of Minnesota . Andrew Gacek. 2009. A Framework for Specifying, Prototyping, and Reasoning about Computational Systems. Ph. D. Dissertation. University of Minnesota.
3. Nominal abstraction
4. Unification under a mixed prefix