@misc{indiciae489b76951a2e,
  title = {Assessing vegetation response to drought in the northern Great Plains using vegetation and drought indices},
  author = {Lei Ji and Albert J. Peters},
  year = {2003},
  doi = {10.1016/s0034-4257(03)00174-3},
  url = {https://pubs.usgs.gov/publication/70156737},
  note = {Source identifier: 70156737}
}