@misc{indiciae7c2d2260404b,
  title = {Nuclear thermal rocket propulsion application to Mars missions},
  author = {Emrich, W. J., Jr. and Young, A. C. and Mulqueen, J. A.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920056884},
  note = {Source identifier: 19920056884}
}