@inproceedings {4962,
	title = {Query Algebra and Query Optimization for Concept Assertion Retrieval},
	booktitle = {International Workshop on Description Logics (DL)},
	year = {2010},
	url = {http://ceur-ws.org/Vol-573/paper_42.pdf},
	author = {Jeffrey Pound and David Toman and Grant Weddell and Jiewen Wu}
}
