@article{JMLR:v18:16-410,
  author  = {Zeyuan Allen-Zhu},
  title   = {Katyusha: The First Direct Acceleration of Stochastic Gradient Methods},
  journal = {Journal of Machine Learning Research},
  year    = {2018},
  volume  = {18},
  number  = {221},
  pages   = {1--51},
  url     = {http://jmlr.org/papers/v18/16-410.html}
}