@misc{indiciae770adc5b0ebe,
  title = {Nitrous Oxide/Paraffin Hybrid Rocket Engines},
  author = {Zubrin, Robert and Snyder, Gary},
  year = {2010},
  url = {https://ntrs.nasa.gov/citations/20100009666},
  note = {Source identifier: 20100009666}
}