@article{JMLR:v20:17-340,
  author  = {WenWu Wang and Ping Yu and Lu Lin and Tiejun Tong},
  title   = {Robust Estimation of Derivatives Using Locally Weighted Least Absolute Deviation Regression},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {60},
  pages   = {1--49},
  url     = {http://jmlr.org/papers/v20/17-340.html}
}