@misc{indiciae043acb192370,
  title = {Activity and affect among the aged.},
  author = {R H Chang and R A Dodder},
  year = {1985},
  doi = {10.1080/00224545.1985.9713515},
  url = {https://pubmed.ncbi.nlm.nih.gov/4021447/},
  note = {Source identifier: 4021447}
}