@misc{indiciaeac5423e8d34c,
  title = {Opponent model for line interval discrimination: interval and vernier performance compared.},
  author = {M J Morgan and D Regan},
  year = {1987},
  doi = {10.1016/0042-6989(87)90147-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/3617541/},
  note = {Source identifier: 3617541}
}