@misc{indiciae1b4ed46841f6,
  title = {[Sampling methods for the estimation of vaccination coverage].},
  author = {E P Silva},
  year = {1986},
  doi = {10.1590/s0034-89101986000500007},
  url = {https://pubmed.ncbi.nlm.nih.gov/3589464/},
  note = {Source identifier: 3589464}
}