@misc{indiciaeac010338779a,
  title = {Drive level, incentive conditions and systematic densensitization.},
  author = {W Kass and F H Gilner},
  year = {1974},
  doi = {10.1016/0005-7967(74)90098-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4846230/},
  note = {Source identifier: 4846230}
}