@misc{indiciae7cffd685039e,
  title = {Exploratory electromagnetic thruster research Annual report},
  author = {Ducati, A. C. and Jahn, R. G. and Muehlberger, E. and Treat, R. P.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680012432},
  note = {Source identifier: 19680012432}
}