@ARTICLE{SantosEtal:jaesa08,
  title = {Optimal Trajectories Towards Near-Earth-Objects Using Solar Eletric Propulsion (SEP) and Gravity Assisted Maneuver},
  author = {Denilson Paulo Souza dos Santos and Antonio Fernando Bertachini de Almeida Prado and Lorenzo Casalino and Guido Colasurdo},
  pages = {51--64},
  journal = {Journal of Aerospace Engineering, Sciences and Applications},
  volume = {1},
  number = {2},
  year = {2008}
}