@misc{indiciae2498108b1315,
  title = {Analysis of selected deep space missions},
  author = {West, W. S. and Holman, M. L. and Bilsky, H. W.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720005237},
  note = {Source identifier: 19720005237}
}