@misc{indiciae354de774a369,
  title = {A safety valve for pollution control systems.},
  author = {M E Ward},
  year = {1981},
  doi = {10.1111/j.1365-2044.1981.tb08726.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7212232/},
  note = {Source identifier: 7212232}
}