@unpublished {citation227,
	title = {High-dimensional union support recovery in multivariate regression},
	journal = {Advances in Neural Information Processing Systems (NIPS)},
	year = {2008},
	url = {http://www.cs.berkeley.edu/~jordan/papers/obozinski-wainwright-jordan-nips08.pdf},
	author = {G. Obozinski and M. J. Wainwright and M. I. Jordan and D. Koller and Y. Bengio and D. Schuurmans and L. Bottou}
}
