@misc{indiciaee4ae89e9620a,
  title = {Perceived exertion and stimulus intensity modulation.},
  author = {R J Robertson and R L Gillespie and E Hiatt and K D Rose},
  year = {1977},
  doi = {10.2466/pms.1977.45.1.211},
  url = {https://pubmed.ncbi.nlm.nih.gov/911381/},
  note = {Source identifier: 911381}
}