@misc{indiciaea3cf3821b193,
  title = {A nonparametric identification method for a class of non-linear systems},
  author = {Udwadia, F. E. and Kuo, C. P. and Garba, J. A.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810045044},
  note = {Source identifier: 19810045044}
}