@misc{indiciae5517bdeaabfb,
  title = {Krylov model reduction algorithm for undamped structural dynamics systems},
  author = {Craig, Roy R., Jr. and Su, Tzu-Jeng},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920036004},
  note = {Source identifier: 19920036004}
}