@misc{indiciae88c2d7c6c265,
  title = {Study of spontaneous behavior in squirrel monkey groups: observation techniques, recording devices, numerical evaluation and reliability tests.},
  author = {S Hopf},
  year = {1972},
  doi = {10.1159/000155455},
  url = {https://pubmed.ncbi.nlm.nih.gov/4628330/},
  note = {Source identifier: 4628330}
}