@misc{indiciaec33c4a978695,
  title = {Space transportation nodes assumptions and requirements: Lunar base systems study task 2.1},
  author = {Kahn, Taher Ali and Simonds, Charles H. and Stump, William R.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880019560},
  note = {Source identifier: 19880019560}
}