TY  - RPRT
TI  - Microfractures produced by a laboratory scale hypervelocity impact into granite
AU  - Siegfried, R. W., II
AU  - Simmons, G.
AU  - Richter, D.
AU  - Hoerz, F.
PY  - 1977
UR  - https://ntrs.nasa.gov/citations/19780057727
ID  - 19780057727
ER  -