@misc{indiciae8d5ad8fba8d7,
  title = {Counting errors due to overlapping particles in thermal precipitator samples.},
  author = {S A ROACH},
  year = {1958},
  doi = {10.1136/oem.15.4.250},
  url = {https://pubmed.ncbi.nlm.nih.gov/13596547/},
  note = {Source identifier: 13596547}
}