@misc{indiciae65f165473604,
  title = {Group training with active participation: some methodological limitations.},
  author = {P C WOLFF and D D BURNSTEIN and D F HAGGARD and J A VAN LOO},
  year = {1963},
  doi = {10.2466/pms.1963.16.1.179},
  url = {https://pubmed.ncbi.nlm.nih.gov/14001609/},
  note = {Source identifier: 14001609}
}