@misc{indiciae39c59bfed571,
  title = {Friendship patterns.},
  author = {L Button},
  year = {1979},
  doi = {10.1016/s0140-1971(79)80011-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/512123/},
  note = {Source identifier: 512123}
}