@misc{indiciae7129b6c3885d,
  title = {The simultaneous integration of many trajectories using nilpotent normal forms},
  author = {Grayson, Matthew A. and Grossman, Robert},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910004637},
  note = {Source identifier: 19910004637}
}