@misc{indiciae9ad52641b2fc,
  title = {Problems of studying extinction risks.},
  author = {A H Harcourt},
  year = {2005},
  doi = {10.1126/science.310.5752.1276c},
  url = {https://pubmed.ncbi.nlm.nih.gov/16311317/},
  note = {Source identifier: 16311317}
}