TedeevA. F. (2006) “Initial-boundary-value problems for quasilinear degenerate hyperbolic equations with damping. Neumann problem”, Ukrains’kyi Matematychnyi Zhurnal, 58(2), pp. 272–282. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3451 (Accessed: 22November2024).