Raymond R. Devillers Hanna Klaudel Maciej Koutny Petri Net Semantics of the Finite pi-calculus Terms. 203-226 2006 70 Fundam. Inform. 3 http://iospress.metapress.com/openurl.asp?genre=article&issn=0169-2968&volume=70&issue=3&spage=203 db/journals/fuin/fuin70.html#DevillersKK06