Massimiliano Colombo Elisabetta Di Nitto Marco Mauri SCENE: A Service Composition Execution Environment Supporting Dynamic Changes Disciplined Through Rules. 191-202 2006 conf/icsoc/2006 ICSOC http://dx.doi.org/10.1007/11948148_16 db/conf/icsoc/icsoc2006.html#ColomboNM06