@misc{indiciaeef1008a90734,
  title = {Bracken retinopathy in sheep.},
  author = {K C Barnett and W F Blakemore and J Mason},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4515549/},
  note = {Source identifier: 4515549}
}