@incollection{JEDP_1976____A1_0,
     author = {Alinhac, Serge},
     title = {Diffusion des singularit\'es \`a travers une surface pour un op\'erateur hyperbolique},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {1},
     pages = {1--9},
     publisher = {Ecole polytechnique},
     year = {1976},
     language = {fr},
     url = {http://archive.numdam.org/item/JEDP_1976____A1_0/}
}