@misc{indiciaeea1be101cce9,
  title = {PIC code modeling of spacecraft charging potential during electron beam injection into a background of neutral gas and plasma, part 1},
  author = {Koga, J. K. and Lin, C. S. and Winglee, R. M.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900012476},
  note = {Source identifier: 19900012476}
}