@misc{indiciae273e85682628,
  title = {An automated Townsend null system.},
  author = {D L Haskard},
  year = {1971},
  doi = {10.1111/j.1440-1673.1971.tb01281.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5139188/},
  note = {Source identifier: 5139188}
}