Pavel Klinov Bijan Parsia Optimization and Evaluation of Reasoning in Probabilistic Description Logic: Towards a Systematic Approach. 213-228 2008 International Semantic Web Conference http://dx.doi.org/10.1007/978-3-540-88564-1_14 conf/semweb/2008 db/conf/semweb/iswc2008.html#KlinovP08