@misc{indiciae8fd3cb1af538,
  title = {A self-maintained Pulfrich pendulum (apparatus note).},
  author = {R L Gregory},
  year = {1984},
  doi = {10.1068/p130633},
  url = {https://pubmed.ncbi.nlm.nih.gov/6535987/},
  note = {Source identifier: 6535987}
}