@article{JMLR:v19:17-537,
  author  = {Ohad Shamir},
  title   = {Distribution-Specific Hardness of Learning Neural Networks},
  journal = {Journal of Machine Learning Research},
  year    = {2018},
  volume  = {19},
  number  = {32},
  pages   = {1--29},
  url     = {http://jmlr.org/papers/v19/17-537.html}
}