@misc{indiciaebf8f9a33276b,
  title = {Development of an on-line parameter estimation system using the discrete modal filter},
  author = {Shelley, S. J. and Freudinger, L. C. and Allemang, R. J.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19940035833},
  note = {Source identifier: 19940035833}
}