@misc{indiciae258134a6dcd6,
  title = {Concepts for manned lunar habitats},
  author = {Hypes, W. D. and Butterfield, A. J. and King, C. B. and Qualls, G. D. and Davis, W. T. and Gould, M. J. and Nealy, J. E. and Simonsen, L. C.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910020754},
  note = {Source identifier: 19910020754}
}