@misc{indiciaeeb3629b71706,
  title = {Heavy elements in surface materials - Determination by alpha particle scattering.},
  author = {Economou, T. E. and Anderson, W. A. and Blume, E. M. and Turkevich , A. L.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730058727},
  note = {Source identifier: 19730058727}
}