KolesovA. Y., MishchenkoE. F., & RozovN. K. (1998). Parametric bufferness in systems of parabolic and hyperbolic equations with small diffusion. Ukrains’kyi Matematychnyi Zhurnal, 50(1), 22–35. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/4969