Thomas Weise Steffen Bleul Diana Elena Comes Kurt Geihs Different Approaches to Semantic Web Service Composition. 90-96 2008 ICIW http://doi.ieeecomputersociety.org/10.1109/ICIW.2008.32 conf/iciw/2008 db/conf/iciw/iciw2008.html#WeiseBCG08