Parameter-uniform finite difference schemes for singularly perturbed parabolic diffusion-convection-reaction problems. - Eugene O'Riordan; M. L. Pickett; Grigorii I. Shishkin (Math. Comput., 2006)

A parameter-uniform numerical method for a singularly perturbed two parameter elliptic problem. - Eugene O'Riordan; M. L. Pickett (Adv. Comput. Math., 2011)

Numerical approximations to the scaled first derivatives of the solution to a two parameter singularly perturbed problem. - Eugene O'Riordan; M. L. Pickett (J. Comput. Appl. Math., 2019)