@misc{indiciae78e53d54d0b5,
  title = {Max Gratzinger (1892-1968).},
  author = {R G Kesel},
  year = {1968},
  doi = {10.1902/jop.1968.39.4.210},
  url = {https://pubmed.ncbi.nlm.nih.gov/4874813/},
  note = {Source identifier: 4874813}
}