@misc{indiciaed49e540f2cb2,
  title = {Content analysis: steps to a more precise coding procedure.},
  author = {R P Lederman},
  doi = {10.1097/00005721-199109000-00012},
  url = {https://pubmed.ncbi.nlm.nih.gov/1758274/},
  note = {Source identifier: 1758274}
}