@misc{indiciaea2249b07bfd1,
  title = {Appreciation (Ludwig Guttman).},
  author = {M Weiss},
  year = {1979},
  doi = {10.1038/sc.1979.22},
  url = {https://pubmed.ncbi.nlm.nih.gov/386230/},
  note = {Source identifier: 386230}
}