@misc{indiciaed07324ecb4e6,
  title = {Asymptotically stable direct model reference adaptive controllers for processes not necessarily satisfying a positive real constraint},
  author = {Kaufman, Howard and Neat, Gregory W.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920046482},
  note = {Source identifier: 19920046482}
}