@misc{indiciaeed48776cd5c2,
  title = {An efficient electro-ultrafilter.},
  author = {R B JOHNSON},
  year = {1953},
  doi = {10.1128/am.1.5.252-254.1953},
  url = {https://pubmed.ncbi.nlm.nih.gov/13092852/},
  note = {Source identifier: 13092852}
}