@misc{indiciaef20c6a26c32b,
  title = {Variable Structure PID Control to Prevent Integrator Windup},
  author = {Hall, C. E. and Hodel, A. S. and Hung, J. Y.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/19990041955},
  note = {Source identifier: 19990041955}
}