@ARTICLE{
author={Teofanov Ljiljana,Brdar Mirjana M,Franz Sebastian,Zarin Helena},
year={2018},
title={SDFEM for an elliptic singularly perturbed problem with two parameters},
journal={CALCOLO},
volume={55},
number={4},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Zarin Helena,Roos Hans-Goerg,Teofanov Ljiljana},
year={2018},
title={A continuous interior penalty finite element method for a third-order singularly perturbed boundary value problem},
journal={COMPUTATIONAL & APPLIED MATHEMATICS},
volume={37},
number={1},
pages={175-190},
document_type={Article},
} 

@ARTICLE{
author={Zarin Helena},
year={2017},
title={Exponentially graded mesh for a singularly perturbed problem with two small parameters},
journal={APPLIED NUMERICAL MATHEMATICS},
volume={120},
number={},
pages={233-242},
document_type={Article},
} 

@ARTICLE{
author={Brdar Mirjana M,Zarin Helena,Teofanov Ljiljana},
year={2016},
title={A singularly perturbed problem with two parameters in two dimensions on graded meshes},
journal={COMPUTERS & MATHEMATICS WITH APPLICATIONS},
volume={72},
number={10},
pages={2582-2603},
document_type={Article},
} 

@ARTICLE{
author={Brdar Mirjana M,Zarin Helena},
year={2016},
title={On graded meshes for a two-parameter singularly perturbed problem},
journal={APPLIED MATHEMATICS AND COMPUTATION},
volume={282},
number={},
pages={97-107},
document_type={Review},
} 

@ARTICLE{
author={Brdar Mirjana M,Zarin Helena},
year={2016},
title={A singularly perturbed problem with two parameters on a Bakhvalov-type mesh},
journal={JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS},
volume={292},
number={},
pages={307-319},
document_type={Article},
} 

@ARTICLE{
author={Zarin Helena},
year={2014},
title={On discontinuous Galerkin finite element method for singularly perturbed delay differential equations},
journal={APPLIED MATHEMATICS LETTERS},
volume={38},
number={},
pages={27-32},
document_type={Article},
} 

@ARTICLE{
author={Linss Torsten,Radojev Goran S,Zarin Helena},
year={2012},
title={Approximation of singularly perturbed reaction-diffusion problems by quadratic C-1-splines},
journal={NUMERICAL ALGORITHMS},
volume={61},
number={1},
pages={35-55},
document_type={Article},
} 

@ARTICLE{
author={Franz Sebastian,Tobiska Lutz,Zarin Helena},
year={2009},
title={A New Approach To Recovery Of Discontinuous Galerkin},
journal={JOURNAL OF COMPUTATIONAL MATHEMATICS},
volume={27},
number={6},
pages={697-712},
document_type={Article},
} 

@ARTICLE{
author={Teofanov Ljiljana,Zarin Helena},
year={2009},
title={Superconvergence analysis of a finite element method for a two-parameter singularly perturbed problem},
journal={BIT NUMERICAL MATHEMATICS},
volume={49},
number={4},
pages={743-765},
document_type={Article},
} 

@ARTICLE{
author={Zarin Helena},
year={2009},
title={Continuous-discontinuous finite element method for convection-diffusion problems with characteristic layers},
journal={JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS},
volume={231},
number={2},
pages={626-636},
document_type={Article},
} 

@ARTICLE{
author={Roos Hans-Goerg,Zarin Helena},
year={2007},
title={A supercloseness result for the discontinuous Galerkin stabilization of convection-diffusion problems on shishkin meshes},
journal={NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS},
volume={23},
number={6},
pages={1560-1576},
document_type={Article},
} 

@ARTICLE{
author={Zarin Helena,Roos Hans-Goerg},
year={2005},
title={Interior penalty discontinuous approximations of convection-diffusion problems with parabolic layers},
journal={NUMERISCHE MATHEMATIK},
volume={100},
number={4},
pages={735-759},
document_type={Article},
} 

@ARTICLE{
author={Roos Hans-Goerg,Zarin Helena},
year={2003},
title={The streamline-diffusion method for a convection-diffusion problem with a point source},
journal={JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS},
volume={150},
number={1},
pages={109-128},
document_type={Article},
}