TY  - RPRT
TI  - ZIP3D: An elastic and elastic-plastic finite-element analysis program for cracked bodies
AU  - Shivakumar, K. N.
AU  - Newman, J. C., Jr.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19910002803
ID  - 19910002803
ER  -