@misc{indiciae08b4bc001bca,
  title = {A simplified closing-volume method suitable for field use.},
  author = {M Green and D M Travis},
  year = {1972},
  doi = {10.1016/s0140-6736(72)92536-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4116605/},
  note = {Source identifier: 4116605}
}