@misc{indiciaec0d57cc37103,
  title = {Additional photoperiodic response in sheep.},
  author = {D S HART},
  year = {1953},
  doi = {10.1038/171133a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/13025513/},
  note = {Source identifier: 13025513}
}