@misc{indiciaed65843b67172,
  title = {Pn Geometric Spreading},
  author = {Yang, Xiaoning and Phillips, William Scott},
  year = {2017},
  doi = {10.2172/1345121},
  url = {https://www.osti.gov/biblio/1345121},
  note = {Source identifier: 1345121}
}