Zhu, H., and Lin, W., 1994: The singularly perturbed Dirichlet problem for a system of conditionally stable quasilinear second-order equations. J. East China Norm. Univ. Natur. Sci. Ed. Vol. 4, p. 15–24
Zhu, H., and Lin, W., 1994: The singularly perturbed Dirichlet problem for a system of conditionally stable quasilinear second-order equations. J. East China Norm. Univ. Natur. Sci. Ed. Vol. 4, p. 15–24