Finite elements on locally uniform meshes for convection-diffusion problems with boundary layers. - Hans-Görg Roos; Martin Schopf (Computing, 2011)

Error Estimation in Energy Norms: Is It Necessary to Fit the Mesh to Boundary Layers. - Hans-Görg Roos; Martin Schopf (NAA, 2012)

Nitsche-mortaring for singularly perturbed convection-diffusion problems. - Torsten Linß; Hans-Görg Roos; Martin Schopf (Adv. Comput. Math., 2012)

A convection-diffusion problem with a small variable diffusion coefficient. - Hans-Goerg Roos; Martin Schopf (CoRR, 2020)