@misc{indiciaed522909bc21d,
  title = {Automatic counting of microscopic particles.},
  author = {W H WALTON},
  year = {1952},
  doi = {10.1038/169518a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/14929222/},
  note = {Source identifier: 14929222}
}