@article{436,
  author = {PFM Teunis and GJ Medema and L Kruidenier and AH Havelaar},
  title = {Assessment of the risk of infection by Cryptosporidium or Giardia in drinking water from a surface water source},
  year = {1997},
  journal = {Water Research},
  volume = {31},
  pages = {1333–1346},
  url = {https://www.sciencedirect.com/science/article/abs/pii/S0043135496003879},
  language = {eng},
}