@article{MM2_1993__78_4_155815,
     author = {Fabio Giannoni and Antonio Masiello},
     title = {Geodesics on {Lorentzian} manifolds with quasi-convex boundary.},
     journal = {Manuscripta mathematica},
     pages = {381--396},
     publisher = {mathdoc},
     volume = {78},
     number = {4},
     year = {1993},
     zbl = {0795.53062},
     url = {http://geodesic.mathdoc.fr/item/MM2_1993__78_4_155815/}
}