@inproceedings {4139,
	title = {Approximating the Top-M Passages in a Parallel Question Answering System},
	booktitle = {International Conference on Information and Knowledge Management (CIKM)},
	year = {2004},
	doi = {10.1145/1031171.1031259},
	author = {Charles Clarke and Egidio L. Terra}
}
