@misc{indiciae9619ed10ab98,
  title = {Stability analysis of a class of pulse frequency modulated error sampled control systems},
  author = {Monopoli, R. V. and Wylie, B. K.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710033610},
  note = {Source identifier: 19710033610}
}