@incollection{NIPS2009_0013,
 title = {Unsupervised Feature Selection for the $k$-means Clustering Problem},
 author = {Christos Boutsidis and Michael Mahoney and Petros Drineas},
 booktitle = {Advances in Neural Information Processing Systems 22},
 editor = {Y. Bengio and D. Schuurmans and J. Lafferty and C. K. I. Williams and A. Culotta},
 pages = {153--161},
 year = {2009}
}