@misc{indiciaee2f9ebc98f35,
  title = {An active optimal control strategy of rotor vibrations using external forces},
  author = {Zhu, W. and Castelazo, I. and Nelson, H. D.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900059169},
  note = {Source identifier: 19900059169}
}