@misc{indiciae731bdcaedd08,
  title = {Primary electric propulsion in the evolving automated space transportation propulsion program},
  author = {Edgecombe, D. S. and Haughey, J. W. and Lam, B. C.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700064112},
  note = {Source identifier: 19700064112}
}