@misc{indiciaeee0c2e17b912,
  title = {The remote measurement of Rhodamine B concentration when used as fluorescent tracer in hydrologic studies},
  author = {Howard Theodore Betz},
  year = {1967},
  doi = {10.3133/ofr6811},
  url = {https://pubs.usgs.gov/publication/ofr6811},
  note = {Source identifier: ofr6811}
}