@inproceedings{subgradientdescentlearnsorthogonal,
  title = {Subgradient Descent Learns Orthogonal Dictionaries},
  author = {Yu Bai and Qijia Jiang and Ju Sun},
  year = {2018},
  booktitle = {ICLR 2019 5},
  eprint = {1810.10702},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1810.10702v2},
}