@misc{indiciae20b2bfa20eb8,
  title = {Galileo encounter with 951 Gaspra: First pictures of an asteroid},
  author = {M. J. S. Belton and J. Veverka and P. Thomas and P. Helfenstein and D. Simonelli and C. Chapman and M. E. Davies and R. Greeley and R. Greenberg and J. Head and S. Murchie and K. Klaasen and T. V. Johnson and A. McEwen and D. Morrison and G. Neukum and F. Fanale and C. Anger and M. Carr and C. Pilcher},
  year = {1992},
  doi = {10.1126/science.257.5077.1647},
  url = {https://pubs.usgs.gov/publication/70017001},
  note = {Source identifier: 70017001}
}