@misc{indiciae65e2e7640714,
  title = {["Counting" experiments with ravens using "matching-from-sample" methods. A contribution on problem-solving behavior in higher aniMALS].},
  author = {D Simons},
  year = {1976},
  url = {https://pubmed.ncbi.nlm.nih.gov/961120/},
  note = {Source identifier: 961120}
}