@misc{indiciae4f8b5873ed5e,
  title = {Sputter ejection of matter from Io},
  author = {Haff, P. K. and Watson, C. C. and Yung, Y. L.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810059625},
  note = {Source identifier: 19810059625}
}