@misc{indiciaee3e5199b0220,
  title = {Ultrasonic Drilling and Coring},
  author = {Pal, D. and Peterson, T. and Dolgin, B. and Sherrit, S. and Bar-Cohen, Y.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20210003574},
  note = {Source identifier: 20210003574}
}