@inproceedings{Bou-Bok-Des-Zid-2017,
    author={Eric Bourgeois and Olivier Bokanowski and Anna Désilles and 
           Hasnaa Zidani },
    title={New improvements in the optimization of the launcher ascent 
           trajectory through the HJB approach },
    doi={10.13009/EUCASS2017-71 },
    booktitle={Proceedings of "7TH EUROPEAN CONFERENCE FOR AERONAUTICS AND 
           SPACE SCIENCES (EUCASS)", 2017, 15p. },
    year={2017 },
}