A second-order scheme for singularly perturbed differential equations with discontinuous source term. - Hans-Görg Roos; Helena Zarin (J. Num. Math., 2002)

Interior penalty discontinuous approximations of convection-diffusion problems with parabolic layers. - Helena Zarin; Hans-Görg Roos (Numerische Mathematik, 2005)

Continuous-discontinuous finite element method for convection-diffusion problems with characteristic layers. - Helena Zarin (J. Comput. Appl. Math., 2009)

Approximation of singularly perturbed reaction-diffusion problems by quadratic C1-splines. - Torsten Linß; Goran Radojev; Helena Zarin (Numer. Algorithms, 2012)

On discontinuous Galerkin finite element method for singularly perturbed delay differential equations. - Helena Zarin (Appl. Math. Lett., 2014)

On graded meshes for a two-parameter singularly perturbed problem. - Mirjana Brdar; Helena Zarin (Appl. Math. Comput., 2016)

A singularly perturbed problem with two parameters in two dimensions on graded meshes. - Mirjana Brdar; Helena Zarin; Ljiljana Teofanov (Comput. Math. Appl., 2016)

A singularly perturbed problem with two parameters on a Bakhvalov-type mesh. - Mirjana Brdar; Helena Zarin (J. Comput. Appl. Math., 2016)