@misc{indiciaec882f5ef785d,
  title = {An approach to research.},
  author = {J A von Fraunhofer},
  year = {1973},
  doi = {10.1016/0300-5712(73)90085-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4516012/},
  note = {Source identifier: 4516012}
}