@misc{indiciae2aa502fc3ea5,
  title = {A comparison of matrix methods for calculating eigenvalues in acoustically lined ducts},
  author = {Watson, W. and Lansing, D. L.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760013853},
  note = {Source identifier: 19760013853}
}