Hi S Gilda
I've prepared a BOM: https://github.com/marcobattaglia/jboss-bom/tree/jboss-javaee-6.0-with-drools/jboss-javaee-6.0-with-drools-expert
In this POM we have three dependencies to drools expert. If you consider that it's ok I'll pull a request. 
Thank you.