1. Comparative exponential dichotomies and column diagonal dominance;Berkey;J. Math. Anal. Appl.,1976
2. Dichotomies and reducibility;Coppel;J. Differential Eq.,1967
3. Stability and Asymptotic Behavior of Differential Equations;Coppel,1965
4. Almost Periodic Functions;Corduneanu,1968
5. Almost periodic differential equations;Fink,1974