@misc{indiciae2fbb5e3afd5e,
  title = {Human support for Mars exploration - Issues and approaches},
  author = {Gross, Anthony R. and Harper, Lynn D. and Shafto, Michael G. and Vernikos, Joan and Webbon, Bruce W. and Berry, William E.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930028080},
  note = {Source identifier: 19930028080}
}