@misc{indiciaeecf95e887a68,
  title = {The filtering operations--past, present, and future.},
  author = {H S Sugar},
  year = {1981},
  doi = {10.1097/00004397-198102110-00003},
  url = {https://pubmed.ncbi.nlm.nih.gov/7012064/},
  note = {Source identifier: 7012064}
}