@misc{indiciae2f5a34297219,
  title = {Space Resource Requirements for Future In-Space Propellant Production Depots},
  author = {Smitherman, David and Fikes, John and Roy, Stephanie and Henley, Mark W. and Potter, Seth D. and Howell, Joe T.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20020016967},
  note = {Source identifier: 20020016967}
}