@article{SLSEDP_2022-2023____A2_0,
     author = {Touati, Arthur},
     title = {Geometric optics approximation for the {Einstein} vacuum equations},
     journal = {S\'eminaire Laurent Schwartz {\textemdash} EDP et applications},
     note = {talk:7},
     pages = {1--13},
     publisher = {Institut des hautes \'etudes scientifiques & Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     year = {2022-2023},
     doi = {10.5802/slsedp.159},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5802/slsedp.159/}
}