@misc{indiciaefb4b46c80880,
  title = {Self-advancing step-tap tool},
  author = {Pettit, Donald R. and Penner, Ronald K. and Franklin, Larry D. and Camarda, Charles J.},
  year = {2008},
  url = {https://ntrs.nasa.gov/citations/20080020312},
  note = {Source identifier: 20080020312}
}