@misc{indiciae9490feaebcb1,
  title = {Cost functions for care services for the elderly.},
  author = {M R Knapp},
  year = {1978},
  doi = {10.1093/geront/18.1.30},
  url = {https://pubmed.ncbi.nlm.nih.gov/631576/},
  note = {Source identifier: 631576}
}