@article{SEDP_1976-1977____A20_0,
     author = {Frisch, M.},
     title = {Croissance asymptotique des solutions de l'\'equation des ondes sur une vari\'et\'e riemannienne compacte \`a courbure n\'egative},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:21},
     pages = {1--12},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1976-1977},
     mrnumber = {482880},
     zbl = {0362.35051},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1976-1977____A20_0/}
}