@misc{indiciaebb1f063767cc,
  title = {Use of correlation to improve estimates of the mean and variance},
  author = {M.B. Fiering},
  year = {1963},
  doi = {10.3133/pp434c},
  url = {https://pubs.usgs.gov/publication/pp434C},
  note = {Source identifier: pp434C}
}