• What is a singularly perturbed problem?
• Singular perturbation theory from Scholarpedia.

References

• Hans-Görg, Martin Stynes and Lutz Tobiska, Robust Numerical Methods for Singularly Perturbed Differential Equations, 2nd ed., Springer, 2008.
• BAIL 2008, Proceedings of the International Conference on Boundary and Interior Layers - Computational and Asymptotic Methods, Limerick, July 2008, Lecture Notes in Computational Science and Engineering, Vol. 69, Hegarty, A.; Kopteva, N.; O'Riordan, E.; Stynes, M. (Eds.) 2009.
• BAIL 2010 - Boundary and Interior Layers, Computational and Asymptotic Methods, Lecture Notes in Computational Science and Engineering, Vol. 81, Carmelo Clavero, José Luis Gracia and Francisco J. Lisbona (Eds)
• G. I. Shishkin and Lidia P. Shishkina, Difference methods for singular perturbation problems, Chapman and Hall/CRC, 2008.
• P. A. Farrell, A. F. Hegarty, J. J. H. Miller , E. O' Riordan and G. I. Shishkin, Robust computational techniques for boundary layers, Chapman and Hall (2000), ISBN 1-58488-192-5.
• J. J. H. Miller, E. O' Riordan and G. I. Shishkin, Fitted numerical methods for singular perturbation problems: error estimates in the maximum norm for linear problems in one and two dimensions, World-Scientific (1996), ISBN 981-02-2462-1.
• Torsten T. Linß, Layer-Adapted Meshes for Reaction-Convection-Diffusion Problems, Springer Lecture Notes in Mathematics, Vol. 1985.