TY  - RPRT
TI  - ROPEC - ROtary PErcussive Coring Drill for Mars Sample Return
AU  - Chu, Philip
AU  - Spring, Justin
AU  - Zacny, Kris
PY  - 2014
UR  - https://ntrs.nasa.gov/citations/20150004061
ID  - 20150004061
ER  -