1. Neumaier, A.: Interval Methods for System of Equations. Cambridge University Press, Cambridge (1990)
2. Alefeld, G., Herzberger, J.: Introduction to Interval Computations. Academic Press, London (1983)
3. Lecture Notes in Computer Science;E. Asarin,2002
4. Ball, T.: Formalizing counter-example driven predicate refinement with weakest preconditions. Technical Report MSR-TR-2004-134, Microsoft Research (2004)
5. Lecture Notes in Computer Science;T. Ball,2004