@misc{indiciaec042bb7f5268,
  title = {Asymptotic behavior in a deterministic epidemic model.},
  author = {H W Hethcote},
  doi = {10.1007/bf02458365},
  url = {https://pubmed.ncbi.nlm.nih.gov/4788626/},
  note = {Source identifier: 4788626}
}