@misc{indiciae1deba9edd943,
  title = {Estimation of descriptive statistics for multiply censored water quality data},
  author = {Dennis R. Helsel and Timothy A. Cohn},
  year = {2010},
  doi = {10.1029/wr024i012p01997},
  url = {https://pubs.usgs.gov/publication/70014353},
  note = {Source identifier: 70014353}
}