@misc{indiciaeac175a3800b1,
  title = {Design of optimal probing signals for vector parameter estimation.},
  author = {Nahi, N. E. and Napjus, G. A.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720040120},
  note = {Source identifier: 19720040120}
}