@misc{indiciaec56cd61acf45,
  title = {Noise reduction by absorption, shielding and isolation.},
  author = {V H HILL},
  year = {1956},
  doi = {10.1080/00968205609344358},
  url = {https://pubmed.ncbi.nlm.nih.gov/13292347/},
  note = {Source identifier: 13292347}
}