@article{journals/jasis/PeatW91, title = {The limitations of term co-occurrence data for query expansion in document retrieval systems.}, author = {Helen J. Peat and Peter Willett}, journal = {JASIS}, number = {5}, pages = {378-383}, url = {http://dblp.uni-trier.de/db/journals/jasis/jasis42.html#PeatW91}, volume = {42}, year = {1991}, biburl = {http://www.bibsonomy.org/bibtex/2642eeb0ddb4193fb2655f3ef8572ccd0/dblp}, description = {dblp}, date = {2002-01-03}, keywords = {dblp } }