@misc{indiciae99590179e073,
  title = {Walnut Hulls Clean Aluminum},
  author = {Colberg, W. R. and Gordon, G. H. and Jackson, C. H.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19830000344},
  note = {Source identifier: 19830000344}
}