Eric Andonoff Lotfi Bouzguenda Chihab Hanachi Specifying Workflow Web Services Using Petri Nets with Objects and Generating of Their OWL-S Specifications. 41-52 2005 conf/ecweb/2005 EC-Web http://dx.doi.org/10.1007/11545163_5 db/conf/ecweb/ecweb2005.html#AndonoffBH05