@misc{indiciae701be8d3231e,
  title = {Barbary macaques categorize shrill barks into two call types.},
  author = {J Fischer},
  year = {1998},
  doi = {10.1006/anbe.1997.0663},
  url = {https://pubmed.ncbi.nlm.nih.gov/9632468/},
  note = {Source identifier: 9632468}
}