@misc{indiciaed7c6ab7105d3,
  title = {Proton impact ionization and a fast calculation method},
  author = {Xiaohua Fang and Dirk Lummerzheim and Charles H. Jackman},
  url = {https://ntrs.nasa.gov/citations/12637345973289},
  note = {Source identifier: 12637345973289}
}