Chang, Y.-K., R. Zhang, and G. M. N’Guérékata. “Weighted Pseudo Almost Automorphic Solutions to Nonautonomous Semilinear Evolution Equations With Delay and $S^{p}$-Weighted Pseudo Almost Automorphic Coefficients”. Topological Methods in Nonlinear Analysis, vol. 43, no. 1, Apr. 2016, pp. 69-88, https://apcz.umk.pl/TMNA/article/view/TMNA.2014.005.