@misc{indiciae2499f0c8b4e7,
  title = {Solving modal equations of motion with initial conditions using MSC/NASTRAN DMAP. Part 1: Implementing exact mode superposition},
  author = {Abdallah, Ayman A. and Barnett, Alan R. and Ibrahim, Omar M. and Manella, Richard T.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930014550},
  note = {Source identifier: 19930014550}
}