The Unified Policy Framework (UPF)
The official AFP releases are tagged. Additionally, this repository may contain extensions (i.e., a development version) that may be submitted (as an update of the UPF entry) at a later stage.
achim@logicalhacking:~$ isabelle build -D UPF
This project is licensed under a 3-clause BSD-style license.
- Achim D. Brucker, Lukas Brügger, and Burkhart Wolff. The Unified Policy Framework (UPF). In Archive of Formal Proofs, 2014. http://www.isa-afp.org/entries/UPF.shtml, Formal proof development