1.
Samusenko PF. Asymptotic integration of singularly perturbed systems of hyperbolic-type partial differential equations with degeneration. Ukr. Mat. Zhurn. [Internet]. 2011May25 [cited 2024Apr.26];63(5):668-85. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2752