@misc{indiciae8a4fa1c95159,
  title = {An optimal period for setting sustained variability levels.},
  author = {P D Stokes and P Balsam},
  year = {2001},
  doi = {10.3758/bf03196155},
  url = {https://pubmed.ncbi.nlm.nih.gov/11340864/},
  note = {Source identifier: 11340864}
}