Messaoudi, S. A., and M. Zahri. “Analytical and Computational Results for the Decay of Solutions of a Damped Wave Equation With Variable-Exponent Nonlinearities”. Topological Methods in Nonlinear Analysis, vol. 59, no. 2B, June 2022, pp. 851-66, doi:10.12775/TMNA.2021.039.