@misc{indiciae4aa8f7874617,
  title = {A method of measuring and grading microscopic spherical particles.},
  author = {V TIMBRELL},
  year = {1952},
  doi = {10.1038/170318a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/12993146/},
  note = {Source identifier: 12993146}
}