@misc{indiciae43ed45196b26,
  title = {A permutation test for quantile regression},
  author = {Brian S. Cade and Jon D. Richards},
  year = {2006},
  doi = {10.1198/108571106x96835},
  url = {https://pubs.usgs.gov/publication/1015122},
  note = {Source identifier: 1015122}
}