@misc{indiciaed5dfcf5e3f0a,
  title = {Why go to the outer planets},
  author = {Eisenman, A. R. and Gasteiger, R. L. and Mcdonald, W. S. and Newburn, R. L., Jr.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700065678},
  note = {Source identifier: 19700065678}
}