@misc{indiciae8468571dba90,
  title = {Opiates, cyclic nucleotides, and xanthines.},
  author = {H O Collier and D L Francis and A C Roy},
  year = {1976},
  url = {https://pubmed.ncbi.nlm.nih.gov/192053/},
  note = {Source identifier: 192053}
}