@misc{indiciaea6c068a442c6,
  title = {Optimal model reduction and frequency-weighted extension},
  author = {Spanos, J. T. and Milman, M. H. and Mingori, D. L.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900060550},
  note = {Source identifier: 19900060550}
}