@misc{indiciae75a059581241,
  title = {An improved spectrophotometer.},
  author = {H Hartridge},
  year = {1915},
  doi = {10.1113/jphysiol.1915.sp001739},
  url = {https://pubmed.ncbi.nlm.nih.gov/16993324/},
  note = {Source identifier: 16993324}
}