@misc{indiciae5616598664be,
  title = {The x-transform and its use in sampled-data system analysis.},
  author = {Mcdaniel, W. L., Jr. and Phillips, C. L.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670057198},
  note = {Source identifier: 19670057198}
}