@misc{indiciae2fc2d0ea7ed5,
  title = {On the Equations of the Rectangular Interferometer.},
  author = {C Barus},
  year = {1918},
  doi = {10.1073/pnas.4.1.13},
  url = {https://pubmed.ncbi.nlm.nih.gov/16586781/},
  note = {Source identifier: 16586781}
}