@misc{indiciaed4bcde13da5c,
  title = {Morphine tolerance acquisition as an associative process.},
  author = {S Siegel},
  year = {1977},
  doi = {10.1037//0097-7403.3.1.1},
  url = {https://pubmed.ncbi.nlm.nih.gov/845541/},
  note = {Source identifier: 845541}
}