1. On finite-time hyperbolicity;Berger;Commun. Pure Appl. Anal.,2011
2. Nonautonomous finite-time dynamics;Berger;Discrete Contin. Dyn. Syst. Ser. B,2008
3. A remark on finite-time hyperbolicity;Berger;Proc. Appl. Math. Mech.,2008
4. A definition of spectrum of differential equations on finite time;Berger;J. Differential Equations,2009
5. Differential Geometry: Manifolds, Curves, and Surfaces;Berger,1988