@misc{indiciae06b338d0122d,
  title = {Smallpox and its post-eradication surveillance.},
  author = {Z Jezek and L N Khodakevich and J F Wickett},
  year = {1987},
  url = {https://pubmed.ncbi.nlm.nih.gov/3319266/},
  note = {Source identifier: 3319266}
}