@misc{indiciae70aaedb128b8,
  title = {Plastic spheres in clip-on frames.},
  author = {C BERENS and B E TAYLOR},
  year = {1957},
  doi = {10.1016/0002-9394(57)92781-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/13458315/},
  note = {Source identifier: 13458315}
}