Messaoudi, Salim A., and Waled Al-Khulaifi. “General and Optimal Decay for a Viscoelastic Equation With Boundary Feedback”. Topological Methods in Nonlinear Analysis 51, no. 2 (April 22, 2018): 413–427. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2017.066.