@misc{indiciae30ac74694b6e,
  title = {Some stimulus variables affecting the discrimination of objects by monkeys.},
  author = {J M WARREN},
  year = {1956},
  doi = {10.1080/00221325.1956.10532954},
  url = {https://pubmed.ncbi.nlm.nih.gov/13319671/},
  note = {Source identifier: 13319671}
}