Batty, C., Hutter, W., & Rabiger, F. (1999). Almost periodicity of mild solutions of inhomogeneous periodic cauchy problems. Elsevier.

Batty, C., W. Hutter, and F. Rabiger. Almost Periodicity of Mild Solutions of Inhomogeneous Periodic Cauchy Problems. Elsevier, 1999.

Batty, C., et al. Almost Periodicity of Mild Solutions of Inhomogeneous Periodic Cauchy Problems. Elsevier, 1999.