TY  - RPRT
TI  - Single Piezo-Actuator Rotary-Hammering Drill
AU  - Sherrit, Stewart
AU  - Bao, Xiaoqi
AU  - Badescu, Mircea
AU  - Bar-Cohen, Yoseph
PY  - 2011
UR  - https://ntrs.nasa.gov/citations/20110012270
ID  - 20110012270
ER  -