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In this thesis, we focus on the proposal of distributed workflow systemsdedicated to the automation of administrative business processes. We propose anapproach to build such systems by relying on the concepts of multiagentsystems, Peer to Peer (P2P) architecture, Service-Oriented Architecture (SOA)and structured documents (artifacts) cooperative edition. Indeed, we developmathematical tools that allow any workflow systems designer, to express eachadministrative process in the form of an attributed grammar whose symbolsrepresent tasks to be executed, productions specify a scheduling of thesetasks, and instances (the derivation trees that conform to it) represent thedifferent execution scenarios leading to business goal states. The obtainedgrammatical model is then introduced into a proposed P2P system which is incharge of carrying out the completely decentralised execution of the underlyingprocess's instances. The said system orchestrates a process's instanceexecution as a choreography during which, various software agents driven byhuman agents (actors), coordinate themselves through artifacts that theycollectively edit. The exchanged artifacts represent the system's memory: theyprovide information on already executed tasks, on those ready to be executedand on their executors. The software agents are autonomous and identical: theyexecute the same unique protocol each time they receive an artifact. Thisprotocol allows them to identify the tasks they must immediately execute, toexecute them, to update the artifact and to disseminate it if necessary, forthe continuation of the execution. Moreover, actors potentially have only apartial perception of processes in which they are involved. In practice, thismeans that certain tasks can be carried out confidentially.

A Grammatical Approach for Distributed Business Process Management using Structured and Cooperatively Edited Mobile Artifacts