1. Unified Modelling Language,
http://www.uml.org
2. Yeung, W.L., Leung, K.R.P.H., Wang, J., Wei, D.: Modelling and Model Checking Suspendible Business Processses via Statechart Diagrams and CSP. Science of Computer Programming 65, 14–29 (2007)
3. van Langenhove, S.: Towards the Correctness of Software Behavior in UML. PhD Thesis, Ghent University, Belgium (2005)
4. Harel, D., Pnueli, A., Schmidt, J.P., Sherman, R.: On the Formal Semantics of State Machines. In: 2nd IEEE Symp. on Logic in Computer Science, pp. 54–64. IEEE Press, Los Alamitos (1987)
5. Lecture Notes in Computer Science;D. Harel,2004