@misc{indiciae857f180a01a2,
  title = {A Return to Io: Science Goals and Implementation},
  author = {Spencer, J. R. and Smythe, W. D. and Lopes-Gautier, R. and McEwen, A. S.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20010041280},
  note = {Source identifier: 20010041280}
}