@misc{indiciae353d53fbe1a6,
  title = {Forced and self-excited oscillations in propellant lines.},
  author = {Keller, R. B. and Wylie, E. B. and Zielke, W.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690059998},
  note = {Source identifier: 19690059998}
}