@misc{indiciae2fb955c18aeb,
  title = {Unmanned planetary spacecraft chemical rocket propulsion.},
  author = {Burlage, H., Jr. and Gin, W. and Riebling, R. W.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730025300},
  note = {Source identifier: 19730025300}
}