@misc{indiciae470b1006035f,
  title = {Mental rotation of three-dimensional objects.},
  author = {R N Shepard and J Metzler},
  year = {1971},
  doi = {10.1126/science.171.3972.701},
  url = {https://pubmed.ncbi.nlm.nih.gov/5540314/},
  note = {Source identifier: 5540314}
}