@article{Bon-Cai-Pic-2010,
    author={Bernard Bonnard and Jean-Baptiste Caillau and Gautier Picot },
    title={Geometric and numerical techniques in optimal control of two 
           and three- body problems },
    journal={Commun. Inf. Syst. },
    year={2010 },
    volume={10(4) },
    pages={239--278},
}