@misc{indiciae22b976646f37,
  title = {Concentration and Detection of Cryptosporidium Oocysts in Surface Water Samples by Method 1622 Using Ultrafiltration and Capsule Filtration},
  author = {O. D. Simmons and M.D. Sobsey and C.D. Heaney and F. W. Schaefer and D.S. Francy},
  year = {2001},
  doi = {10.1128/aem.67.3.1123-1127.2001},
  url = {https://pubs.usgs.gov/publication/70023957},
  note = {Source identifier: 70023957}
}