@misc{indiciae9dda1dd1cbb3,
  title = {Convergent validity between willingness to pay elicitation methods: An application to Grand Canyon whitewater boaters},
  author = {Christopher Neher and Lucas S. Bair and John Duffield and David A. Patterson and Katherine Neher},
  year = {2018},
  doi = {10.1080/09640568.2018.1435411},
  url = {https://pubs.usgs.gov/publication/70196384},
  note = {Source identifier: 70196384}
}