@article{JMLR:v22:20-287,
  author  = {Michael R. Metel and Akiko Takeda},
  title   = {Stochastic Proximal Methods for Non-Smooth Non-Convex Constrained Sparse Optimization},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {115},
  pages   = {1--36},
  url     = {http://jmlr.org/papers/v22/20-287.html}
}