@misc{indiciae8eeff1e3dd2c,
  title = {Two notes on impossible figures.},
  author = {J V Molins},
  year = {1994},
  doi = {10.2466/pms.1994.78.2.370},
  url = {https://pubmed.ncbi.nlm.nih.gov/8022664/},
  note = {Source identifier: 8022664}
}