@misc{indiciaeeeaa4b5560e4,
  title = {Discrimination learning and learning sets to visual exploration incentives.},
  author = {R A BUTLER and H F HARLOW},
  year = {1957},
  doi = {10.1080/00221309.1957.9920369},
  url = {https://pubmed.ncbi.nlm.nih.gov/13475710/},
  note = {Source identifier: 13475710}
}