@misc{indiciaeac341340d07d,
  title = {A dynamical model for human population.},
  author = {J Yellin and P A Samuelson},
  year = {1974},
  doi = {10.1073/pnas.71.7.2813},
  url = {https://pubmed.ncbi.nlm.nih.gov/4527607/},
  note = {Source identifier: 4527607}
}