@misc{indiciaef3ee6bcbd0f3,
  title = {Project Mercury: the Program and Its Objectives},
  author = {Donlan, C. J. and Heberlig, J. C.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770022136},
  note = {Source identifier: 19770022136}
}