@incollection{JEDP_1989____A2_0,
     author = {Godin, Paul},
     title = {Ondes hyperboliques non lin\'eaires globales},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {2},
     pages = {1--8},
     publisher = {Ecole polytechnique},
     year = {1989},
     mrnumber = {91a:35113},
     zbl = {0687.35055},
     language = {fr},
     url = {http://archive.numdam.org/item/JEDP_1989____A2_0/}
}