@misc{indiciaef457d3edd7b5,
  title = {Electric propulsion - characteristics, applications, and status},
  author = {Maloy, J. E. and Dulgeroff, C. R. and Poeschel, R. L.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810004568},
  note = {Source identifier: 19810004568}
}