@misc{indiciaea20783bbe5c2,
  title = {On optimization and the guidance problem for systems with transport lags.},
  author = {Clark, L. G. and Sebestka, H. R.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670061429},
  note = {Source identifier: 19670061429}
}