TY  - RPRT
TI  - Algorithms and software for nonlinear structural dynamics
AU  - Belytschko, Ted
AU  - Gilbertsen, Noreen D.
AU  - Neal, Mark O.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19890020436
ID  - 19890020436
ER  -