@misc{indiciae3c9c95b9aaf6,
  title = {EARTH - VENUS TRAJECTORIES, 1964},
  author = {Bollman, W. E. and Clarke, V. C., Jr. and Hamilton, T. W. and Pfeiffer, C. G. and Roth, R. Y.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19630004416},
  note = {Source identifier: 19630004416}
}