Yoshiyuki Hino & Toshiki Naito 
Almost Periodic Solutions of Differential Equations in Banach Spaces [PDF ebook] 

This monograph presents recent developments in spectral conditions for the existence of periodic and almost periodic solutions of inhomogenous equations in Banach Spaces. Many of the results represent significant advances in this area. In particular, the authors systematically present a new approach based on the so-called evolution semigroups with