@misc{indiciaef54184a8749f,
  title = {Early manned interplanetary mission study, volume i summary report},
  author = {R. V. Ragsac and M. G. Ross and L. F. Koehler and Z. A. Taulbee and J. F. McLaughlin and G. C. Vliet and R. R. Titus and R. S. Thomas and J. A. Carson and E. I. Curtis and F. V. Bischof and G. E. Rich and C. M. Bennett and J. Zoszak and L. B. Stark and S. M. Vuscovich},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19650059495},
  note = {Source identifier: 19650059495}
}