@misc{indiciaea169cf941974,
  title = {Sustained attention and grade retention.},
  author = {M Gordon and B B Mettelman and M Irwin},
  year = {1994},
  doi = {10.2466/pms.1994.78.2.555},
  url = {https://pubmed.ncbi.nlm.nih.gov/8022681/},
  note = {Source identifier: 8022681}
}