@misc{indiciae36ded853e775,
  title = {Planetary cave exploration progresses},
  author = {Timothy N. Titus and C. M. Phillips-Lander and P. J. Boston and J. J. Wynne and L. Kerber},
  year = {2020},
  doi = {10.1029/2020eo152045},
  url = {https://pubs.usgs.gov/publication/70216729},
  note = {Source identifier: 70216729}
}