@misc{indiciaef9dfe90fe575,
  title = {A note on relations between sets.},
  author = {N Rashevsky},
  year = {1966},
  doi = {10.1007/bf02477001},
  url = {https://pubmed.ncbi.nlm.nih.gov/5963161/},
  note = {Source identifier: 5963161}
}