@misc{indiciae7f10ba18766a,
  title = {Explicating activity theory: a formal replication.},
  author = {C F Longino and C S Kart},
  year = {1982},
  doi = {10.1093/geronj/37.6.713},
  url = {https://pubmed.ncbi.nlm.nih.gov/7130646/},
  note = {Source identifier: 7130646}
}