1. Die Stabilit�tsfrage bei Differentialgleichungen
2. J. Massera and J. Schäffer, Linear Differential Equations and Function Spaces, Vol. 21 (Pure Appl. Math., 1966).
3. J. Daleckii and M. Krein, Stability of Solutions of Differential Equations in Banach Spaces, Vol. 43 (Translations of Mathematical Monographs, Amer. Math. Soc., 1974).
4. Exponential forward splitting for noninvertible difference equations
5. The dichotomy spectrum for noninvertible systems of linear difference equations