@misc{indiciae876c4124c2dd,
  title = {The Open Mercury Manometer Read by Displacement Interferometry.},
  author = {C Barus},
  year = {1921},
  doi = {10.1073/pnas.7.3.71},
  url = {https://pubmed.ncbi.nlm.nih.gov/16576579/},
  note = {Source identifier: 16576579}
}