Juan Carlos Augusto Michael J. Butler Carla Ferreira Stephen-John Craig Using SPIN and STeP to Verify Business Processes Specifications. 207-213 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2890&spage=207 2003 conf/ershov/2003 Ershov Memorial Conference db/conf/ershov/ershov2003.html#AugustoBFC03