@misc{indiciae685d42f52928,
  title = {Algorithms and software for nonlinear structural dynamics},
  author = {Belytschko, Ted and Gilbertsen, Noreen D. and Neal, Mark O.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890020436},
  note = {Source identifier: 19890020436}
}