@misc{indiciaebede4cd0555f,
  title = {Ethological concepts.},
  author = {R F EWER},
  year = {1957},
  doi = {10.1126/science.126.3274.599},
  url = {https://pubmed.ncbi.nlm.nih.gov/13467250/},
  note = {Source identifier: 13467250}
}