@misc{indiciae4749116ba688,
  title = {Phytochrome-mediated polarotropism: an electron microscopical study.},
  author = {H Falk and A M Steiner},
  year = {1968},
  doi = {10.1007/bf00599732},
  url = {https://pubmed.ncbi.nlm.nih.gov/5725590/},
  note = {Source identifier: 5725590}
}