@article{JMLR:v21:19-169,
  author  = {Yu Wang and Siqi Wu and Bin Yu},
  title   = {Unique Sharp Local Minimum in L1-minimization Complete Dictionary Learning},
  journal = {Journal of Machine Learning Research},
  year    = {2020},
  volume  = {21},
  number  = {63},
  pages   = {1--52},
  url     = {http://jmlr.org/papers/v21/19-169.html}
}