@article{JMLR:v20:17-728,
  author  = {Thanh V. Nguyen and Raymond K. W. Wong and Chinmay Hegde},
  title   = {Provably Accurate Double-Sparse Coding},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {141},
  pages   = {1--43},
  url     = {http://jmlr.org/papers/v20/17-728.html}
}