@article{SEDP_1999-2000____A4_0,
     author = {Lebeau, Gilles},
     title = {Optique non lin\'eaire et ondes sur critiques},
     journal = {S\'eminaire Goulaouic-Schwartz},
     note = {talk:4},
     pages = {1--11},
     year = {1999-2000},
     publisher = {Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     zbl = {1069.35512},
     mrnumber = {1813167},
     language = {fr},
     url = {https://www.numdam.org/item/SEDP_1999-2000____A4_0/}
}