@misc{indiciaefde4e696ed82,
  title = {Group inverse sampling: An economical approach to inverse sampling},
  author = {Bardia Panahbehagh and David R. Smith},
  year = {2017},
  doi = {10.1002/env.2459},
  url = {https://pubs.usgs.gov/publication/70212319},
  note = {Source identifier: 70212319}
}