@article{JMLR:v18:14-415,
  author  = {Xiao-Tong Yuan and Ping Li and Tong Zhang},
  title   = {Gradient Hard Thresholding Pursuit},
  journal = {Journal of Machine Learning Research},
  year    = {2018},
  volume  = {18},
  number  = {166},
  pages   = {1--43},
  url     = {http://jmlr.org/papers/v18/14-415.html}
}