Novickij, Jurij, and Artūras Štikonas. “On the Stability of a Finite Difference Scheme With Two Weights for Wave Equation With Nonlocal Conditions”. Lietuvos matematikos rinkinys 55, no. A (December 22, 2014): 22–27. Accessed July 18, 2024. https://www.journals.vu.lt/LMR/article/view/14901.