@inproceedings {4100,
	title = {An Effectiveness Measure for Ambiguous and Underspecified Queries},
	booktitle = {International Conference on the Theory of Information Retrieval (ICTIR)},
	year = {2009},
	doi = {10.1007/978-3-642-04417-5_17},
	author = {Charles Clarke and Maheedhar Kolla and Olga Vechtomova}
}
