@misc{indiciaef1b18757d52a,
  title = {High spacecraft potentials on ISEE-1 in sunlight},
  author = {Whipple, E. C., Jr. and Olsen, R. C.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870017511},
  note = {Source identifier: 19870017511}
}