@article {gillisvavasis3,
	title = {On the Complexity of Robust PCA and l1-Norm Low-Rank Matrix Approximation},
	journal = {Mathematics of Operations Research},
	volume = {43},
	year = {2018},
	note = {Arxiv link: },
	pages = {1072-1084},
	author = {Nicolas Gillis and Stephen A. Vavasis}
}