@inproceedings {4144,
	title = {Domain-Specific Synonym Expansion and Validation for Biomedical Information Retrieval (MultiText Experiments for TREC 2004)},
	booktitle = {Text Retrieval Conference (TREC)},
	year = {2004},
	url = {http://trec.nist.gov/pubs/trec13/papers/uwaterloo-clarke.geo.pdf},
	author = {Stefan B{\"u}ttcher and Charles Clarke and Gordon Cormack}
}
