@misc{indiciaed7398ccd9eeb,
  title = {[Practical experiences with the neutral-zero-passage method].},
  author = {H Seyfarth and B Bülow and J Buchmann},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4727307/},
  note = {Source identifier: 4727307}
}