Arrieta, J. M., F. D. M. Bezerra, and A. N. Carvalho. “Rate of Convergence of Global Attractors of Some Perturbed Reaction-Diffusion Problems”. Topological Methods in Nonlinear Analysis, vol. 41, no. 2, Apr. 2013, pp. 229-53, https://apcz.umk.pl/TMNA/article/view/TMNA.2013.010.