@misc{indiciae46798d8cbedf,
  title = {Conjugate photoelectron impact ionization},
  author = {Block, L. P. and Falthammar, C.-G. and Shawhan, S. D.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710032684},
  note = {Source identifier: 19710032684}
}