@misc{indiciaef7880edec32f,
  title = {Space Trajectory Error Analysis Program (STEAP) for halo orbit missions. Volume 1: Analytic and user's manual},
  author = {Byrnes, D. V. and Carney, P. C. and Underwood, J. W. and Vogt, E. D.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740018194},
  note = {Source identifier: 19740018194}
}