@misc{indiciae8663fe2d2fc2,
  title = {Optical mark recognition. Tallying information from filled-in 'bubbles'.},
  author = {B P Bergeron},
  year = {1998},
  doi = {10.3810/pgm.1998.08.550},
  url = {https://pubmed.ncbi.nlm.nih.gov/9735018/},
  note = {Source identifier: 9735018}
}