TY  - RPRT
TI  - Reducing Extra-Terrestrial Excavation Forces with Percussion
AU  - Schuler, Jason
AU  - Mueller, Robert
AU  - Smith, Drew
AU  - Nick, Andrew
AU  - Lippitt, Thomas
PY  - 2012
UR  - https://ntrs.nasa.gov/citations/20120015456
ID  - 20120015456
ER  -