@misc{W1489950266,
  author = {Simon J. Sheather and M. C. Jones},
  title = {A Reliable Data-Based Bandwidth Selection Method for Kernel Density Estimation},
  year = {1991},
  howpublished = {Journal of the Royal Statistical Society Series B (Statistical Methodology)},
  doi = {https://doi.org/10.1111/j.2517-6161.1991.tb01857.x}
}