@misc{indiciaeb7e50376a85e,
  title = {[Universal differential manometer].},
  author = {V Petrík and J Calfa and B Brozman and P Sedlák},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4826912/},
  note = {Source identifier: 4826912}
}