@misc{indiciaeae61751d0630,
  title = {Optimal control of linear time delay systems},
  author = {Aggarwal, J. K. and Banks, H. T. and Eller, D. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690006775},
  note = {Source identifier: 19690006775}
}