@misc{indiciae5c14c361824b,
  title = {A low-cost, reliable, and accurate general-purpose timer.},
  author = {M J Roth and B R Landis and B Rosenberg and C A Silver},
  year = {1967},
  doi = {10.1901/jeab.1967.10-383},
  url = {https://pubmed.ncbi.nlm.nih.gov/6033559/},
  note = {Source identifier: 6033559}
}