@misc{indiciae28bc3e80ae28,
  title = {Slit-beam ruler.},
  author = {G O Waring},
  year = {1976},
  doi = {10.1016/0002-9394(76)90024-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/998697/},
  note = {Source identifier: 998697}
}