@misc{indiciaec623b5858ef1,
  title = {Compounding discriminative stimuli controlling free-operant avoidance.},
  author = {H H Emurian and S J Weiss},
  year = {1972},
  doi = {10.1901/jeab.1972.17-249},
  url = {https://pubmed.ncbi.nlm.nih.gov/16811586/},
  note = {Source identifier: 16811586}
}