@misc{indiciae774a381072f0,
  title = {Programmed Instruction Nucleus (PIN): a simplified author-language for computer-aided instruction.},
  author = {A B Forsythe and J R Freed and H S Frey},
  year = {1975},
  doi = {10.1016/0010-4825(75)90020-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/1098845/},
  note = {Source identifier: 1098845}
}