@misc{indiciaede65b19aa9cf,
  title = {Variability of hydrological droughts in the conterminous United States, 1951 through 2014},
  author = {Samuel H. Austin and David M. Wolock and David L. Nelms},
  year = {2018},
  doi = {10.3133/sir20175099},
  url = {https://pubs.usgs.gov/publication/sir20175099},
  note = {Source identifier: sir20175099}
}