@article{ASENS_1992_4_25_2_201_0,
     author = {Lebeau, G.},
     title = {Singularit\'es des solutions d'\'equations d'ondes semi-lin\'eaires},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {201--231},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 25},
     number = {2},
     year = {1992},
     doi = {10.24033/asens.1648},
     mrnumber = {93k:35180},
     zbl = {0776.35088},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1648/}
}