@misc{indiciaeac499fb5690e,
  title = {Learning effects while passively viewing the Necker cube.},
  author = {J Beer},
  year = {1989},
  doi = {10.1177/00315125890693-259},
  url = {https://pubmed.ncbi.nlm.nih.gov/2622752/},
  note = {Source identifier: 2622752}
}