@article{1183541137, author = {Keller, Joseph B.}, title = {Rays, waves and asymptotics}, journal = {Bull. Amer. Math. Soc.}, volume = {84}, number = {6}, year = {1978}, pages = { 727-750}, language = {en}, url = {http://dml.mathdoc.fr/item/1183541137} }
Keller, Joseph B. Rays, waves and asymptotics. Bull. Amer. Math. Soc., Tome 84 (1978) no. 6, pp. 727-750. http://gdmltest.u-ga.fr/item/1183541137/