@misc{indiciae49fd9ba6e0aa,
  title = {A two-variable asymptotic solution for three- dimensional solar powered low-thrust trajectories in the vicinity of the ecliptic plane.},
  author = {Wesseling, P.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680040773},
  note = {Source identifier: 19680040773}
}