Tools and Algorithms for the Construction and Analysis of Systems 12th International Conference, TACAS 2006, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2006, Vienna, Austria, March 25 - April 2, 2006. Proceedings - Hermanns, Holger; Palsberg, Jens (Springer Berlin Heidelberg : Imprint: Springer, 2006)