@misc{indiciaed1eccf19ae26,
  title = {Modern Modal Testing: A Cautionary Tale},
  author = {Akers, James C. and Otten, Kim D. and Sills, Joel W. and Larsen, Curtis E.},
  year = {2019},
  url = {https://ntrs.nasa.gov/citations/20190001554},
  note = {Source identifier: 20190001554}
}