@misc{indiciae53505832e854,
  title = {EEG changes produced by heroin and methadone.},
  author = {J Roubícek and A Zaks and A M Freedman},
  year = {1969},
  doi = {10.1016/0013-4694(69)91251-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4187301/},
  note = {Source identifier: 4187301}
}