@misc{indiciae221e42e4b958,
  title = {Language in chimpanzee?},
  author = {D Premack},
  year = {1971},
  doi = {10.1126/science.172.3985.808},
  url = {https://pubmed.ncbi.nlm.nih.gov/5572906/},
  note = {Source identifier: 5572906}
}