@misc{indiciae335b0660754c,
  title = {ELECTRIC PROPULSION- A NEW TECHNOLOGY},
  author = {Ernst Stuhlinger and Gerhard B. Heller and Robert N. Seitz and George C. Bucher},
  year = {1962},
  url = {https://ntrs.nasa.gov/citations/19630006115},
  note = {Source identifier: 19630006115}
}