@article{10_21136_CMJ_1993_128439,
     author = {Garc{\'\i}a-R{\'\i}o, Eduardo and V\'azquez-Abal, M. Elena},
     title = {Geodesic reflections in {semi-Riemannian} geometry},
     journal = {Czechoslovak Mathematical Journal},
     pages = {583--597},
     year = {1993},
     volume = {43},
     number = {4},
     doi = {10.21136/CMJ.1993.128439},
     mrnumber = {1258422},
     zbl = {0809.53059},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128439/}
}