@misc{indiciae335b9b63abf4,
  title = {Crosstolerance between butorphanol and morphine in rats.},
  author = {Y Z Feng and M Narita and Y T Tseng and B Hoskins and I K Ho},
  year = {1994},
  doi = {10.1016/0091-3057(94)90084-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/7862721/},
  note = {Source identifier: 7862721}
}