@misc{indiciaed2e951916d86,
  title = {Avoidance learning in heterogeneous and homogeneous shuttle boxes.},
  author = {M R Denny and D J Zerbolio and R G Weisman},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5817702/},
  note = {Source identifier: 5817702}
}