Jesper Bengtson Joachim Parrow A Completeness Proof for Bisimulation in the pi-calculus Using Isabelle. 61-75 2007 192 Electr. Notes Theor. Comput. Sci. 1 http://dx.doi.org/10.1016/j.entcs.2007.08.017 db/journals/entcs/entcs192.html#BengtsonP07