@incollection{NIPS2005_645,
 author = {Alexandre {d'Aspremont} and Laurent {El Ghaoui} and Michael I. {Jordan} and Gert R.G. {Lanckriet}},
 title = {A Direct Formulation for Sparse PCA Using Semidefinite Programming},
 booktitle = {Advances in Neural Information Processing Systems 17},
 editor = {Lawrence K. Saul and Yair Weiss and {L\'{e}on} Bottou},
 publisher = {MIT Press},
 address = {Cambridge, MA},
 pages = {41-48},
 year = {2005},
 original = "0041_645.PDF",

}