1. Nonautonomous finite-time dynamics,;A. Berger;Discrete Continuous Dynam. Systems - B,2008
2. A remark on finite-time hyperbolicity,;A. Berger;PAMM Proc. Appl. Math. Mech.,2008
3. A definition of spectrum for differential equations on finite time,;A. Berger;J. Differential Equations,2009
4. "Differential Geometry: Manifolds, Curves, and Surfaces,";M. Berger;Springer,1988
5. "Dichotomies in Stability Theory,";A. Coppel;Lecture Notes in Mathematics \textbf{629},1978