Blot, J., D. Pennequin, and Gaston M. N‘Gu´er´ekata. 2008. “Existence and Uniqueness of Pseudo Almost Automorphic Solutions to Some Classes of Partial Evolution Equations”. CUBO, A Mathematical Journal 10 (3):161–170. https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1508.