@misc{indiciae135aa99c86a5,
  title = {A multi-option program for learning basic addition facts: case studies and an experimental report.},
  author = {G A Jones and C A Thornton and M A Toohey},
  doi = {10.1177/002221948501800603},
  url = {https://pubmed.ncbi.nlm.nih.gov/4020285/},
  note = {Source identifier: 4020285}
}