@misc{indiciae12d470db8b5c,
  title = {Training under two drives, alternately present, vs. training under a single drive.},
  author = {L W PORTER and N E MILLER},
  year = {1957},
  doi = {10.1037/h0043552},
  url = {https://pubmed.ncbi.nlm.nih.gov/13449242/},
  note = {Source identifier: 13449242}
}