SIAM Journal on Numerical Analysis
A singularly perturbed boundary-value problem with a multiple turning point at a boundary is considered. A representation of the solution is given, and it is used in the construction of a uniform finite-difference scheme. The scheme is a first-order exponentially fitted one. An improved modification on a special discretization mesh is given.
Vulanovic, Relja and Farrell, Paul A. (1993). Continuous and Numerical-Analysis of a Multiple Boundary Turning-Point Problem. SIAM Journal on Numerical Analysis 30(5), 1400-1418. Retrieved from https://digitalcommons.kent.edu/cspubs/14