@inproceedings{SIGIR-1978-Williams,
	author        = "Robert L. Williams",
	booktitle     = "{Proceedings of the ACM SIGIR International Conference on Information Storage and Retrieval}",
	cdrom         = "SIGIR1978/P151.pdf",
	doi           = "10.1145/800096.803141",
	pages         = "151--170",
	publisher     = "{ACM}",
	title         = "{Does Relevance Feedback Improve Document Retrieval Performance?}",
	year          = 1978,
}