@misc{indiciae8bd93c182429,
  title = {Different methods of single practice research.},
  author = {J G Hansen and H Schmidt},
  year = {1993},
  doi = {10.3109/02813439309045494},
  url = {https://pubmed.ncbi.nlm.nih.gov/8146466/},
  note = {Source identifier: 8146466}
}