Taha, Wafaa, Raad Hameed, and Sarah Majeed Talab. “Existence of Periodic Solutions of a Nonlinear Allen-Cahn Equation With Neumann Problem”. Al-Qadisiyah Journal of Pure Science 26, no. 1 (December 13, 2020): Math. 71-. Accessed January 22, 2026. https://journalsc.qu.edu.iq/index.php/JOPS/article/view/1248.