@misc{indiciae450334bec1ef,
  title = {A double-beam recording spectrodensitometer.},
  author = {D Staynov and G Stainov},
  year = {1969},
  doi = {10.1088/0022-3735/2/12/433},
  url = {https://pubmed.ncbi.nlm.nih.gov/5361298/},
  note = {Source identifier: 5361298}
}