@misc{indiciaec63ed06f89e2,
  title = {Demography and epidemics.},
  author = {S N Busenberg and K P Hadeler},
  year = {1990},
  doi = {10.1016/0025-5564(90)90102-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/2134480/},
  note = {Source identifier: 2134480}
}