The linear singularly perturbed convection-diffusion problem in one dimension is considered and its discretization on a Bakhvalov-type mesh is analyzed. The preconditioning technique is used to obtain the pointwise convergence uniform in the perturbation parameter.
Nhan, T. A., & Vulanović, R. (2015). Uniform convergence on a Bakhvalov-type mesh using the preconditioning approach. Technical report, arXiv:1504.0483.