@misc{indiciae7d916f6835b5,
  title = {Tunneling gravimetry},
  author = {Patrik Schach and Alexander Friedrich and Jason R. Williams and Wolfgang P. Schleich and Enno Giese},
  year = {2022},
  url = {https://ntrs.nasa.gov/citations/34023995846593},
  note = {Source identifier: 34023995846593}
}