@misc{indiciaeb9f8aa99d44f,
  title = {The global programme of smallpox eradication.},
  author = {I D Ladnyi and I Arita and Z Jezek},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7299106/},
  note = {Source identifier: 7299106}
}