@misc{indiciae5b9dd28b3bba,
  title = {Stimulus generalization of gravity.},
  author = {D F McCoy and K O Lange},
  year = {1969},
  doi = {10.1901/jeab.1969.12-111},
  url = {https://pubmed.ncbi.nlm.nih.gov/4976036/},
  note = {Source identifier: 4976036}
}