Anna Hristoskova Bruno Volckaert Filip De Turck Dynamic Composition of Semantically Annotated Web Services through QoS-Aware HTN Planning Algorithms. 377-382 2009 ICIW http://dx.doi.org/10.1109/ICIW.2009.62 conf/iciw/2009 db/conf/iciw/iciw2009.html#HristoskovaVT09