@misc{indiciae420acb8a3bbe,
  title = {Active rejection of persistent disturbances in flexible space structures},
  author = {Hwang, Cheng-Neng and Jayasuriya, Suhada and Parlos, Alexander G. and Sunkel, John W.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900060627},
  note = {Source identifier: 19900060627}
}