@article{uniquesharplocalminimuminell1,
  title = {Unique Sharp Local Minimum in $\ell_1$-minimization Complete Dictionary Learning},
  author = {Yu Wang and Siqi Wu and Bin Yu},
  year = {2019},
  eprint = {1902.08380},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1902.08380v1},
}