@article{JEMS_2014_16_11_a2,
     author = {Alexandru D. Ionescu and Beno{\^\i}t Pausader},
     title = {Global solutions of quasilinear systems of {Klein{\textendash}Gordon} equations in {3D}},
     journal = {Journal of the European Mathematical Society},
     pages = {2355--2431},
     publisher = {mathdoc},
     volume = {16},
     number = {11},
     year = {2014},
     doi = {10.4171/jems/489},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/489/}
}