@misc{indiciaee44056933ad5,
  title = {A Simple Automatic Short Photoperiod Device.},
  author = {V A Greulach and R Scroggs and G J Davis},
  year = {1956},
  doi = {10.1104/pp.31.6.478},
  url = {https://pubmed.ncbi.nlm.nih.gov/16654928/},
  note = {Source identifier: 16654928}
}