@misc{indiciaeebb21513d635,
  title = {Lunar base - A stepping stone to Mars},
  author = {Duke, M. B. and Mendell, W. W. and Roberts, B. B.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19860044050},
  note = {Source identifier: 19860044050}
}