@article{BSMF_1995__123_1_107_0,
     author = {Berger, Marcel},
     title = {Seules les quadriques admettent des caustiques},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {107--116},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {123},
     number = {1},
     year = {1995},
     doi = {10.24033/bsmf.2252},
     mrnumber = {96m:53009},
     zbl = {0830.51009},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2252/}
}