@misc{indiciae7e67dd39f6b0,
  title = {Letter: Understanding and presenting variation.},
  author = {M J Gardner},
  year = {1975},
  doi = {10.1016/s0140-6736(75)91414-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/47472/},
  note = {Source identifier: 47472}
}