@misc{indiciaef2c21948a938,
  title = {Concurrent schedule control of human visual target fixations.},
  author = {P B Rosenberger},
  year = {1973},
  doi = {10.1901/jeab.1973.20-411},
  url = {https://pubmed.ncbi.nlm.nih.gov/4759060/},
  note = {Source identifier: 4759060}
}