Bak, S. N. “Existence of the Solitary Traveling Waves for a System of Nonlinearly Coupled oscillators on the 2d -Lattice”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 4 (April 25, 2017): 435-444. Accessed April 20, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1707.