Prizzi, Martino, and Krzysztof P. Rybakowski. “Attractors for Singularly Perturbed Damped Wave Equations on Unbounded Domains”. Topological Methods in Nonlinear Analysis 32, no. 1 (September 1, 2008): 1–20. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2008.032.