@misc{indiciae5ad5b3704754,
  title = {Linear quadratic tracking problems in Hilbert space - Application to optimal active noise suppression},
  author = {Banks, H. T. and Silcox, R. J. and Keeling, S. L. and Wang, C.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19930068766},
  note = {Source identifier: 19930068766}
}