@misc{indiciae3a9deaf84963,
  title = {[Influenza in Sofia in 1957].},
  author = {P VERBEV and S ZHELIAZKOV and E GUBEV and A SELEKTAR},
  year = {1961},
  url = {https://pubmed.ncbi.nlm.nih.gov/13925375/},
  note = {Source identifier: 13925375}
}