%0 Journal Article %A Nicolas Lerner %A Toan T. Nguyen %A Benjamin Texier %T The onset of instability in first-order systems %J Journal of the European Mathematical Society %D 2018 %P 1303-1373 %V 20 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/788/ %R 10.4171/jems/788 %F JEMS_2018_20_6_a0