@misc{indiciae7801e4ef6b5d,
  title = {[A newer position-independent perfusable drop counter. Function principle, technical variations, calculation bases and use possibilities].},
  author = {H Biedermann},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7194316/},
  note = {Source identifier: 7194316}
}