@misc{indiciae7cd0dc34bb87,
  title = {A semi-automatic teaching machine.},
  author = {C B FERSTER},
  year = {1960},
  doi = {10.1901/jeab.1960.3-245},
  url = {https://pubmed.ncbi.nlm.nih.gov/13822531/},
  note = {Source identifier: 13822531}
}