Zlotnik, Alexander, and Olga Kireeva. “On Compact 4th Order Finite-Difference Schemes for the Wave Equation”. Mathematical Modelling and Analysis 26, no. 3 (September 10, 2021): 479-502. Accessed December 22, 2024. https://jeelm.vgtu.lt/index.php/MMA/article/view/13770.