@misc{indiciaee11047f68414,
  title = {Transient energy dissipation methods of measuring permeability distributions in unconfined heterogeneous porous materials},
  author = {R. William Nelson and William L. McCollum},
  year = {1972},
  doi = {10.3133/ofr72270},
  url = {https://pubs.usgs.gov/publication/ofr72270},
  note = {Source identifier: ofr72270}
}