@misc{indiciaeab24dfe6e00a,
  title = {Accelerative trends in intellectual development.},
  author = {L K Koppen-Thulesius and H Teichmann},
  year = {1972},
  doi = {10.1111/j.2044-8260.1972.tb00815.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5077880/},
  note = {Source identifier: 5077880}
}