@misc{indiciaea2473323799e,
  title = {Bar coding--a functional tool in survey research.},
  author = {M Siivola and A Rimpelä and S Karvonen and M Rimpelä},
  year = {1992},
  doi = {10.1136/jech.46.2.162},
  url = {https://pubmed.ncbi.nlm.nih.gov/1583433/},
  note = {Source identifier: 1583433}
}