@misc{indiciae167dc4aebb8e,
  title = {An Accelerated Development, Reduced Cost Approach to Lunar/Mars Exploration Using a Modular NTR-Based Space Transportation System},
  author = {Borowski, S. and Clark, J. and Sefcik, R. and Corban, R. and Alexander, S.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19960007720},
  note = {Source identifier: 19960007720}
}