1. J.-R. Abrial, E. Boerger, and H. Langmaack. Preliminary report for the Dagstuhl-Seminar 9523: Methods for Semantics and Specification. Dagstuhl, June 1995.
2. M. Archer and C. Heitmeyer. Mechanical verification of timed automata: A case study. In Proc. 1996 IEEE Real-Time Technology and Applications Symp. (RTAS'96). IEEE Computer Society Press, 1996.
3. M. Archer and C. Heitmeyer. Verifying hybrid systems modeled as timed automata: A case study. Technical report, NRL, Wash., DC, 1997. In preparation.
4. R. Boyer and J. Moore. A Computational Logic. Academic Press, 1979.
5. S. Campos, E. Clarke, and M. Minea. Analysis of real-time systems using symbolic techniques. In Formal Methods for Real-Time Computing, chapter 9. John Wiley & Sons, 1996.