@misc{indiciae90536fb14606,
  title = {Principles and perspectives.},
  author = {Klaus Günter Steinhäuser and Steffi Richter and Petra Greiner and Jutta Penning and Michael Angrick},
  year = {2004},
  doi = {10.1007/bf02979640},
  url = {https://pubmed.ncbi.nlm.nih.gov/15506629/},
  note = {Source identifier: 15506629}
}