@misc{indiciae96236f2a22f6,
  title = {Computer model of a field ion source},
  author = {Pfeifer, J. P. and Falick, A. M. and Burlingame, A. L.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19770085103},
  note = {Source identifier: 19770085103}
}