@misc{indiciaec6025ee32d73,
  title = {An automatic gate selector device for cattle feeding.},
  author = {D J Simpson},
  year = {1968},
  doi = {10.1088/0031-9155/13/3/414},
  url = {https://pubmed.ncbi.nlm.nih.gov/5700186/},
  note = {Source identifier: 5700186}
}