@misc{indiciaea6eeaf7c3643,
  title = {Mass study for modular approaches to a solar electric propulsion module},
  author = {Sharp, G. R. and Cake, J. E. and Oglebay, J. C. and Shaker, F. J.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770012214},
  note = {Source identifier: 19770012214}
}