@misc{indiciae5d317de71439,
  title = {[Influenza in Sofia during 1959].},
  author = {P VERBEV and S ZHELIAZKOV and E GUBEV and V MONEV and G PETROV and Kh KHADZHIKOLEVA},
  year = {1961},
  url = {https://pubmed.ncbi.nlm.nih.gov/13780783/},
  note = {Source identifier: 13780783}
}