@misc{indiciae1ab2d430aa5b,
  title = {Arthur Keller (1868-1934).},
  author = {H R Wiedemann},
  year = {1988},
  doi = {10.1007/bf00441396},
  url = {https://pubmed.ncbi.nlm.nih.gov/3063528/},
  note = {Source identifier: 3063528}
}