@misc{indiciae47bdc3e87130,
  title = {Hemagglutination by smallpox virus.},
  author = {W A COLLIER},
  year = {1949},
  doi = {10.1007/bf02062636},
  url = {https://pubmed.ncbi.nlm.nih.gov/15390382/},
  note = {Source identifier: 15390382}
}