%0 Unpublished Work %A Coron, Jean-Michel %A Nguyen, Hoai-Minh %T On the optimal controllability time for linear hyperbolic systems with time-dependent coefficients %J Annales de l'Institut Fourier %D 2026 %V 0 %N 0 %I Association des Annales de l’institut Fourier %Z Online first %R 10.5802/aif.3745 %G en %F AIF_0__0_0_A33_0