@misc{indiciaec56fdce06bbe,
  title = {Sampling for carbon dioxide.},
  author = {P Allen and W S Wren},
  year = {1987},
  doi = {10.1111/j.1365-2044.1987.tb04073.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3109276/},
  note = {Source identifier: 3109276}
}