@misc{indiciaedcda30858bed,
  title = {Decrease in vascular resistance in the isolated canine hindlimb after graded doses of alfentanil, fentanyl, and sufentanil.},
  author = {D A White and J A Reitan and N D Kien and S J Thorup},
  year = {1990},
  doi = {10.1213/00000539-199007000-00005},
  url = {https://pubmed.ncbi.nlm.nih.gov/2141970/},
  note = {Source identifier: 2141970}
}