@misc{indiciaedf604964fc8e,
  title = {Evidence for electron-electron interaction in projectile K-shell ionization.},
  author = {H Hülskötter and WE Meyerhof and E Dillard and N Guardala},
  year = {1989},
  doi = {10.1103/physrevlett.63.1938},
  url = {https://pubmed.ncbi.nlm.nih.gov/10040719/},
  note = {Source identifier: 10040719}
}