“Existence of Time Periodic Solutions to Boundary Value Problem of One-dimensional Semilinear Viscoelastic Dynamic Equation with Memory”, J. Part. Diff. Eq., vol. 10, no. 1, pp. 1–8, Oct. 1997, Accessed: Dec. 06, 2025. [Online]. Available: https://www.global-sci.com/index.php/jpde/article/view/3840