@misc{indiciaef5a6f5c75963,
  title = {[Biofeedback in chronic headache: is a learning process in physiologic functional parameters detectable?].},
  author = {B Kröner-Herwig and K W Weich},
  year = {1987},
  url = {https://pubmed.ncbi.nlm.nih.gov/3630251/},
  note = {Source identifier: 3630251}
}