@article{EP_2002_11_a1,
     author = {Jean-David Benamou},
     title = {An {Eulerian} numerical method for geometric optics},
     journal = {ESAIM. Proceedings},
     pages = {13--40},
     year = {2002},
     volume = {11},
     doi = {10.1051/proc:2002028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:2002028/}
}