[1]
L. P. Nizhnik, “Stable difference scheme for a nonlinear Klein-Gordon equation”,
Ukr. Mat. Zhurn.
, vol. 49, no. 6, pp. 857–859, Jun. 1997, Accessed: Apr. 13, 2025. [Online]. Available:
https://umj.imath.kiev.ua/index.php/umj/article/view/5073