Robust a Posteriori Error Estimation for a Singularly Perturbed Reaction-Diffusion Equation on Anisotropic Tetrahedral Meshes

@article{Kunert2001RobustAP,
  title={Robust a Posteriori Error Estimation for a Singularly Perturbed Reaction-Diffusion Equation on Anisotropic Tetrahedral Meshes},
  author={Gerd Kunert},
  journal={Adv. Comput. Math.},
  year={2001},
  volume={15},
  pages={237-259}
}