@misc{indiciaef3f69773116d,
  title = {[Measles immunization in the Dresden district].},
  author = {G Heidel and K Beuthin and W Laesch and K Winter},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/7045/},
  note = {Source identifier: 7045}
}