Balaban Yavuzyılmaz, Gülesin, and Mustafa Polat. “Blow-up Solutions of a System of Nonlinear the Klein-Gordon-Fock Type Wave Equations”. Results in Nonlinear Analysis 8, no. 1 (January 17, 2025): 13–23. Accessed January 18, 2025. https://nonlinear-analysis.com/index.php/pub/article/view/523.