@misc{indiciaec83cdc0f3893,
  title = {Photoionization and High Density Gas},
  author = {Kallman, T. and Bautista, M. and White, Nicholas E.},
  year = {2002},
  url = {https://ntrs.nasa.gov/citations/20020070809},
  note = {Source identifier: 20020070809}
}