%0 Conference Paper %B Software Engineering and Formal Methods - 13th International Conference, {SEFM} 2015, York, UK, September 7-11, 2015. Proceedings %D 2015 %G eng %R 10.1007/978-3-319-22969-0\_25 %T An Extensible Operational Semantics for {UML} Activity Diagrams %U https://doi.org/10.1007/978-3-319-22969-0\_25