1. A. B. Vasil’eva, V. F. Butuzov, and N. N. Nefedov, “Contrast Structures in Singularly Perturbed Problems,” Fundam. Prikl. Mat., No. 4, 799–851 (1998).
2. V. F. Butuzov, N. N. Nefedov, and K. R. Schneider, “On the Formation and Propagation of Sharp Transition Layers in Parabolic Problems,” Vestn. Mosk. Gos. Univ., Ser. 3: Fiz. Astron., No. 1, 9–13 (2005).
3. P. C. Fife and L. Hsiao, “The Generation and Propagation of Internal Layers,” Nonlinear Anal. Theory Methods Appl. 12(1), 19–41 (1998).
4. V. T. Volkov, N. E. Grachev, N. N. Nefedov, and A. N. Nikolaev, “On the Formation of Sharp Transition Layers in Two-Dimensional Reaction-Diffusion Models,” Zh. Vychisl. Mat. Mat. Fiz. 47, 1356–1364 (2007) [Comput. Math. Math. Phys. 47, 1301–1309 (2007)].
5. N. N. Nefedov, M. Radziunas, K. R. Schneider, and A. B. Vasil’eva, “Change of the Type of Contrast Structures in Parabolic Neumann Problems,” Zh. Vychisl. Mat. Mat. Fiz. 45, 41–55 (2005) [Comput. Math. Math. Phys. 45, 37-51 (2005)].