@misc{indiciaebe72dfe163a0,
  title = {Backward bifurcation in epidemic control.},
  author = {K P Hadeler and P van den Driessche},
  year = {1997},
  doi = {10.1016/s0025-5564(97)00027-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/9357292/},
  note = {Source identifier: 9357292}
}