@inproceedings{ICML-2017-ChenGWWYY,
	author        = "Yichen Chen and Dongdong Ge and Mengdi Wang and Zizhuo Wang and Yinyu Ye and Hao Yin",
	booktitle     = "{Proceedings of the 34th International Conference on Machine Learning}",
	ee            = "http://proceedings.mlr.press/v70/chen17d.html",
	pages         = "740--747",
	publisher     = "{PMLR}",
	title         = "{Strong NP-Hardness for Sparse Optimization with Concave Penalty Functions}",
	year          = 2017,
}