TY  - RPRT
TI  - Elasto-plastic impact of hemispherical shell impacting on hard rigid sphere
AU  - Raftopoulos, D. D.
AU  - Spicer, A. L.
PY  - 1976
UR  - https://ntrs.nasa.gov/citations/19770003341
ID  - 19770003341
ER  -