@misc{indiciaea173fe54fa7c,
  title = {Comparison of methods for the determination of carotene},
  author = {J.V. Derby and J.B. DeWitt},
  year = {2020},
  doi = {10.1093/jaoac/31.4.704},
  url = {https://pubs.usgs.gov/publication/5220676},
  note = {Source identifier: 5220676}
}