1. On the ill–timed but well–caused;Aceto,1993
2. Timing and causality in process algebra;Aceto;Acta Inform.,1996
3. Real time process algebra;Baeten;Formal Aspects Computing,1991
4. Process theory based on bisimulation semantics;Bergstra,1989
5. An algebraic theory of process efficiency;Cleaveland,1996