Stephen Gorton Carlo Montangero Stephan Reiff-Marganiec Laura Semini StPowla: SOA, Policies and Workflows. 351-362 2007 ICSOC Workshops http://dx.doi.org/10.1007/978-3-540-93851-4_35 conf/icsoc/2007w db/conf/icsoc/icsoc2007w.html#GortonMRS07