Konrad Pfadenhauer Burkhard Kittl Schahram Dustdar Comparison of Two Distinctive Model Driven Web Service Orchestration Proposals. 29-36 2005 conf/wecwis/2005w CEC Workshops http://doi.ieeecomputersociety.org/10.1109/CECW.2005.9 db/conf/wecwis/cecw2005.html#PfadenhauerKD05