@conference {j_y_02:query,
	title = {Query Clustering Using User Logs},
	booktitle = {ACM Transactions on Information Systems,20 (1)},
	year = {2002},
	pages = {59-81},
	pdf = {http://rali.iro.umontreal.ca/rali/sites/default/files/publis/ACMTOIS2002_0.pdf},
	author = {J. Wen and Jian-Yun Nie and H. Zhang}
}
