Krylovas, Aleksandras. “Asymptotic Method for Approximation of Resonant Interaction of Nonlinear Multidimensional Hyperbolic Waves”. Mathematical Modelling and Analysis 13, no. 1 (March 31, 2008): 47-54. Accessed November 22, 2024. https://jest.vgtu.lt/index.php/MMA/article/view/6989.