@TechReport{BolligLeucker04, author = "Benedikt Bollig and Martin Leucker", title = "Message-Passing Automata are expressively equivalent to EMSO logic", institution = "RWTH Aachen", year = "2004", number = "AIB-2004-02", month = feb, url = "http://aib.informatik.rwth-aachen.de/2004/2004-02.ps.gz" }