Concurrency, in particular:
25 Years of Combining Compositionality and Concurrency (WS25CCC).
Programme committee member of Concur 2012
Programme committee member of Reversible Computation 2011.
Programme committee member of Reversible Computation 2010.
Programme committee member of Reversible Computation 2009.
Programme committee member of Structural Operational Semantics 2008.
Joint invited speaker at Express'07, the 14th International Workshop on Expressiveness in Concurrency and GT-VC 2007, Graph Transformation for Verification and Concurrency.
Co-organiser of Express'06, the 13th International Workshop on Expressiveness in Concurrency.
Erdos numbers for Department of Computing