@article{JEDP_1982____A11_0,
     author = {Petkov, Vesselin M.},
     title = {Construction d'une parametrix microlocale et propagation des singularit\'es sur le bord pour les syst\`emes hyperboliques},
     journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {11},
     pages = {1--8},
     publisher = {Ecole polytechnique},
     year = {1982},
     zbl = {0508.35051},
     language = {fr},
     url = {http://www.numdam.org/item/JEDP_1982____A11_0/}
}