@ARTICLE{mingotti2007combined,
  author = {Mingotti, G. and Topputo, F. and Bernelli-Zazzera, F.},
  title = {{Combined Optimal Low-Thrust and Stable-Manifold Trajectories to the Earth--Moon Halo Orbits}},
  journal = {AIP Conference Proceedings},
  year = {2007},
  volume = {886},
  pages = {100--110},
  month = {February},
  doi = {10.1063/1.2710047}
}