@misc{indiciaee9bb13ea3bdf,
  title = {Free-Vibration Analysis of Rotating Beams by a Variable-Order Finite-Element Method},
  author = {Hodges, Dewey H. and Rutkowski, Michael J.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19980033935},
  note = {Source identifier: 19980033935}
}