@misc{indiciaef8a6be246662,
  title = {Recent developments in distance learning.},
  author = {A B Summerfield},
  year = {1993},
  doi = {10.1016/s0959-8049(05)80373-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/8471345/},
  note = {Source identifier: 8471345}
}