Solving Elliptic Problems by the Domain Decomposition Method Using Proconditioning Matrices Derived by Multilevel Splitting of the Finite Element Matrix. - Raytcho D. Lazarov; Panayot S. Vassilevski; Svetozar Margenov (ICS, 1987)

Circulant block-factorization preconditioners for elliptic problems. - Ivan Lirkov; Svetozar Margenov; Panayot S. Vassilevski (Computing, 1994)

Upper bound of the constant in the strengthened C.B.S. inequality for FEM 2D elasticity equations. - Svetozar Dimitrov Margenov (Numer. Linear Algebra Appl., 1994)

Algebraic Multilevel Preconditioning of Anisotropic Elliptic Problems. - Svetozar Margenov; Panayot S. Vassilevski (SIAM J. Sci. Comput., 1994)

Optimal algebraic multilevel preconditioning for local refinement along a line. - Svetozar Margenov; J. M. L. Maubach (Numer. Linear Algebra Appl., 1995)

Displacement Decomposition Circulant Preconditioners for Almost Incompressible 2D Elasticity Systems. - Ivan Lirkov; Svetozar Margenov (WNAA, 1996)

Parallel Complexity of Conjugate Gradient Method with Circulant Preconditioners. - Ivan Lirkov; Svetozar Margenov (Parcella, 1996)

BSR BILU Preconditioning for 3D Simulation of Pile Foundation Systems in Nonlinear Media. - A. Georgiev; Svetozar Margenov (LSSC, 1997)

A Shared Memory Parallel Implementation of Block-Circulant Preconditioners. - Ivan Lirkov; Svetozar Margenov; Marcin Paprzycki; R. Owens (LSSC, 1997)

Algebraic Two-Level Preconditioning of Non-Conforming FEM Systems. - Svetozar Margenov; Panayot S. Vassilevski (LSSC, 1997)

Circulant Block-Factorization Preconditioning of Anisotropic Elliptic Problems. - Ivan Lirkov; Svetozar Margenov; Ludmil T. Zikatanov (Computing, 1997)

Performance of Block-ILU Factorization Preconditioners Based on Block-Size Reduction for 2D Elasticity Systems. - Tony F. Chan; Svetozar Margenov; Panayot S. Vassilevski (SIAM J. Sci. Comput., 1997)

An Introduction to Distributed Algorithms [Book Review]. - Svetozar Margenov; Valmir Carneiro Barbosa (IEEE Concurr., 1998)

Semi-coarsening AMLI algorithms for elasticity problems. - Svetozar Dimitrov Margenov (Numer. Linear Algebra Appl., 1998)

Parallel Conjugate Gradient Method with Circulant Block-Factorization Preconditioners for 3D Elliptic Problems. - Ivan Lirkov; Svetozar Margenov; Marcin Paprzycki; J. McLaughlin (PP, 1999)

Two-level preconditioning of pure displacement non-conforming FEM systems. - Tzanio V. Kolev; Svetozar Margenov (Numer. Linear Algebra Appl., 1999)

AMLI Preconditioning of Pure Displacement Non-conforming Elasticity FEM Systems. - Tzanio V. Kolev; Svetozar Margenov (NAA, 2000)

Parallel Performance of a 3D Elliptic Solver. - Ivan Lirkov; Svetozar Margenov; Marcin Paprzycki (NAA, 2000)

MIC(0) Preconditioning of Rotated Trilinear FEM Elliptic Systems. - Ivan Georgiev; Svetozar Margenov (LSSC, 2001)

On a Two-Level Parallel MIC(0) Preconditioning of Crouzeix-Raviart Non-conforming FEM Systems. - Raytcho D. Lazarov; Svetozar Margenov (Numerical Methods and Application, 2002)

Two-Level Preconditioning of Crouzeix-Raviart Anisotropic FEM Systems. - Gergana Bencheva; Ivan Georgiev; Svetozar Margenov (LSSC, 2003)

Aggregation-Based Multilevel Preconditioning of Non-conforming FEM Elasticity Problems. - Radim Blaheta; Svetozar Margenov; Maya G. Neytcheva (PARA, 2004)

Uniform estimate of the constant in the strengthened CBS inequality for anisotropic non-conforming FEM systems. - Radim Blaheta; Svetozar Margenov; Maya G. Neytcheva (Numer. Linear Algebra Appl., 2004)

Parallel PCG Solver for Nonconforming FE Problems: Overlapping of Communications and Computations. - Gergana Bencheva; Svetozar Margenov; Jirí Starý (LSSC, 2005)

Robust optimal multilevel preconditioners for non-conforming finite element systems. - Radim Blaheta; Svetozar Margenov; Maya G. Neytcheva (Numer. Linear Algebra Appl., 2005)

Benchmarking Performance of an MPI-based Solver for 3D Elasticity Problems. - Ivan Lirkov; Svetozar Margenov; Marcin Paprzycki (John Vincent Atanasoff Symposium, 2006)

Multilevel Preconditioning of 2D Rannacher-Turek FE Problems; Additive and Multiplicative Methods. - Ivan Georgiev; Johannes Kraus 001; Svetozar Margenov (Numerical Methods and Applications, 2006)

Comparative Analysis of Mesh Generators and MIC(0) Preconditioning of FEM Elasticity Systems. - Nikola Kosturski; Svetozar Margenov (Numerical Methods and Applications, 2006)

Generalized Aggregation-Based Multilevel Preconditioning of Crouzeix-Raviart FEM Elliptic Problems. - Svetozar Margenov; Josef Synka (Numerical Methods and Applications, 2006)

Multilevel Preconditioning of Rotated Trilinear Non-conforming Finite Element Problems. - Ivan Georgiev; Johannes Kraus 001; Svetozar Margenov (LSSC, 2007)

On the Numerical Solution of the Heat Transfer Equation in the Process of Freeze Drying. - Krassimir Georgiev; Nikola Kosturski; Svetozar Margenov (LSSC, 2007)

Agents as Resource Brokers in Grids - Forming Agent Teams. - Wojciech Kuranowski; Marcin Paprzycki; Maria Ganzha; Maciej Gawinecki; Ivan Lirkov; Svetozar Margenov (LSSC, 2007)

CBS constants for multilevel splitting of graph-Laplacian and application to preconditioning of discontinuous Galerkin systems. - Raytcho D. Lazarov; Svetozar Margenov (J. Complex., 2007)

On a MIC(0) preconditioning of non-conforming mixed FEM elliptic problems. - Svetozar Margenov; Peter D. Minev (Math. Comput. Simul., 2007)

Multilevel Splitting of Weighted Graph-Laplacian Arising in Non-conforming Mixed FEM Elliptic Problems. - Petia T. Boyanova; Svetozar Margenov (NAA, 2008)

Parallel MIC(0) preconditioning of 3D elliptic problems discretized by Rannacher-Turek finite elements. - Peter Arbenz; Svetozar Margenov; Yavor Vutov (Comput. Math. Appl., 2008)

Multilevel preconditioning of rotated bilinear non-conforming FEM problems. - Ivan Georgiev; Johannes Kraus 001; Svetozar Margenov (Comput. Math. Appl., 2008)

Multilevel algorithms for Rannacher-Turek finite element approximation of 3D elliptic problems. - Ivan Georgiev; Johannes Kraus 001; Svetozar Margenov (Computing, 2008)

On the multilevel preconditioning of Crouzeix-Raviart elliptic problems. - Johannes Kraus 001; Svetozar Margenov; Josef Synka (Numer. Linear Algebra Appl., 2008)

Numerical Study of AMLI Methods for Weighted Graph-Laplacians. - Petia T. Boyanova; Svetozar Margenov (LSSC, 2009)

Multilevel Preconditioning of Crouzeix-Raviart 3D Pure Displacement Elasticity Problems. - Ivan Georgiev; Johannes Kraus 001; Svetozar Margenov (LSSC, 2009)

Numerical Homogenization of Bone Microstructure. - Nikola Kosturski; Svetozar Margenov (LSSC, 2009)

Parallel MIC(0) Preconditioning for Numerical Upscaling of Anisotropic Linear Elastic Materials. - Svetozar Margenov; Yavor Vutov (LSSC, 2009)

Analysis of the CBS Constant for Quadratic Finite Elements. - Ivan Georgiev; Maria Lymbery; Svetozar Margenov (NMA, 2010)

Finite Volume Discretization of Equations Describing Nonlinear Diffusion in Li-Ion Batteries. - Peter Popov; Yavor Vutov; Svetozar Margenov; Oleg Iliev 001 (NMA, 2010)

Robust AMLI methods for parabolic Crouzeix-Raviart FEM systems. - Petia T. Boyanova; Svetozar Margenov; Maya G. Neytcheva (J. Comput. Appl. Math., 2010)

Special Issue on Advanced Computational Algorithms: Introduction. - István Faragó; Ágnes Havasi; Svetozar Margenov; Zahari Zlatev (J. Comput. Appl. Math., 2010)

Improving the Efficiency of Parallel FEM Simulations on Voxel Domains. - Nikola Kosturski; Svetozar Margenov; Yavor Vutov (LSSC, 2011)

On the Robustness of Two-Level Preconditioners for Quadratic FE Orthotropic Elliptic Problems. - Johannes Kraus 001; Maria Lymbery; Svetozar Margenov (LSSC, 2011)

Balancing the Communications and Computations in Parallel FEM Simulations on Unstructured Grids. - Nikola Kosturski; Svetozar Margenov; Yavor Vutov (PPAM (2), 2011)

Robust Two-level Domain Decomposition Preconditioners for High-contrast Anisotropic Flows in Multiscale Media. - Yalchin Efendiev; Juan Galvis; Raytcho D. Lazarov; Svetozar Margenov; Jun Ren (Comput. Methods Appl. Math., 2012)

Multilevel preconditioning of graph-Laplacians: Polynomial approximation of the pivot blocks inverses. - Petia T. Boyanova; Ivan Georgiev; Svetozar Margenov; Ludmil T. Zikatanov (Math. Comput. Simul., 2012)

Parallel algorithms for adaptive time-stepping in radiofrequency liver ablation simulation: implementation on an IBM Blue Gene/P computer. - Krassimir Georgiev; Nikola Kosturski; Svetozar Margenov; Yavor Vutov (FedCSIS (Position Papers), 2013)

Calibration of Parameters for Radio-Frequency Ablation Simulation. - Nikola Kosturski; Svetozar Margenov; Yavor Vutov (LSSC, 2013)

Numerical Homogenization of Heterogeneous Anisotropic Linear Elastic Materials. - Svetozar Margenov; Stanislav Stoykov; Yavor Vutov (LSSC, 2013)

Nonlinear Forced Vibration Analysis of Elastic Structures by Using Parallel Solvers for Large-Scale Systems. - Stanislav Stoykov; Svetozar Margenov (LSSC, 2013)

Multiscale Domain Decomposition Preconditioners for Anisotropic High-Contrast Problems. - Yalchin Efendiev; Juan Galvis; Raytcho D. Lazarov; Svetozar Margenov; Jun Ren (Domain Decomposition Methods in Science and Engineering XX, 2013)

Numerical Homogenization of Epoxy-Clay Composite Materials. - Ivan Georgiev; Evgeni Ivanov; Svetozar Margenov; Yavor Vutov (NMA, 2014)

Isogeometric Analysis for Nonlinear Dynamics of Timoshenko Beams. - Stanislav Stoykov; Clemens Hofreither; Svetozar Margenov (NMA, 2014)

Semi-coarsening AMLI preconditioning of anisotropic trilinear FEM systems. - Ivan Georgiev; Svetozar Margenov (Comput. Math. Appl., 2014)

Numerical computation of periodic responses of nonlinear large-scale systems by shooting method. - Stanislav Stoykov; Svetozar Margenov (Comput. Math. Appl., 2014)

Robust multilevel methods for quadratic finite element anisotropic elliptic problems. - Johannes Kraus 001; Maria Lymbery; Svetozar Margenov (Numer. Linear Algebra Appl., 2014)

Space discretization by B-Splines on discontinuous problems in structural mechanics. - Stanislav Stoykov; Stanislav Harizanov; Svetozar Margenov (BCI, 2015)

Fast Constrained Image Segmentation Using Optimal Spanning Trees. - Stanislav Harizanov; Svetozar Margenov; Ludmil T. Zikatanov (LSSC, 2015)

Thermoelectrical Tick Removal Process Modeling. - Nikola Kosturski; Ivan Lirkov; Svetozar Margenov; Yavor Vutov (LSSC, 2015)

Performance Analysis of Block AMG Preconditioning of Poroelasticity Equations. - Nikola Kosturski; Svetozar Margenov; Peter Popov; Nikola Simeonov; Yavor Vutov (LSSC, 2015)

Scalability of Shooting Method for Nonlinear Dynamical Systems. - Stanislav Stoykov; Svetozar Margenov (LSSC, 2015)

An analytical coarse grid operator applied to a multiscale multigrid method. - Rosangela F. Sviercoski; Peter Popov; Svetozar Margenov (J. Comput. Appl. Math., 2015)

Auxiliary space multigrid method based on additive Schur complement approximation. - Johannes Kraus 001; Maria Lymbery; Svetozar Margenov (Numer. Linear Algebra Appl., 2015)

Applications for ultrascale computing. - Milan Mihajlovic; Lars Ailo Bongo; Raimondas Ciegis; Neki Frasheri; Dragi Kimovski; Peter G. Kropf; Svetozar Margenov; Maya G. Neytcheva; Thomas Rauber; Gudula Rünger; Roman Trobec; Roel Wuyts; et al. (Supercomput. Front. Innov., 2015)

Scalable parallel implementation of shooting method for large-scale dynamical systems. Application to bridge components. - Stanislav Stoykov; Svetozar Margenov (J. Comput. Appl. Math., 2016)

Preconditioning Heterogeneous H(div) Problems by Additive Schur Complement Approximation and Applications. - Johannes K. Kraus; Raytcho D. Lazarov; Maria Lymbery; Svetozar Margenov; Ludmil T. Zikatanov (SIAM J. Sci. Comput., 2016)

Performance Analysis of MG Preconditioning on Intel Xeon Phi: Towards Scalability for Extreme Scale Problems with Fractional Laplacians. - Nikola Kosturski; Svetozar Margenov; Yavor Vutov (LSSC, 2017)

A Comparison of Accuracy and Efficiency of Parallel Solvers for Fractional Power Diffusion Problems. - Raimondas Ciegis; Vadimas Starikovicius; Svetozar Margenov; Rima Kriauziene (PPAM (1), 2017)

Parallel solvers for fractional power diffusion problems. - Raimondas Ciegis; Vadimas Starikovicius; Svetozar Margenov; Rima Kriauziene (Concurr. Comput. Pract. Exp., 2017)

Volume constrained 2-phase segmentation method utilizing a linear system solver based on the best uniform polynomial approximation of x-1/2. - Stanislav Harizanov; Svetozar Margenov; Pencho Marinov; Yavor Vutov (J. Comput. Appl. Math., 2017)

Numerical methods and parallel algorithms for computation of periodic responses of plates. - Stanislav Stoykov; Svetozar Margenov (J. Comput. Appl. Math., 2017)

Numerical algorithms for scientific and engineering applications. - Zahari Zlatev; Ivan Dimov 001; Krassimir Georgiev; Svetozar Margenov (J. Comput. Appl. Math., 2017)

Analysis of Hierarchical Compression Parallel Solver for BEM Problems on Intel Xeon CPUs. - Dimitar Slavchev; Svetozar Margenov (NMA, 2018)

Optimal solvers for linear systems with fractional powers of sparse SPD matrices. - Stanislav Harizanov; Raytcho D. Lazarov; Svetozar Margenov; Pencho Marinov; Yavor Vutov (Numer. Linear Algebra Appl., 2018)

Applications for ultrascale systems. - Svetozar Margenov; Thomas Rauber; Emanouil I. Atanassov; Francisco Almeida; Vicente Blanco Pérez; Raimondas Ciegis; Alberto Cabrera Pérez; Neki Frasheri; Stanislav Harizanov; Rima Kriauziene; Gudula Rünger; Pablo San Segundo; et al. (Ultrascale Computing Systems, 2019)

Scalability analysis of different parallel solvers for 3D fractional power diffusion problems. - Raimondas Ciegis; Vadimas Starikovicius; Svetozar Margenov; Rima Kriauziene (Concurr. Comput. Pract. Exp., 2019)

The Best Uniform Rational Approximation: Applications to Solving Equations Involving Fractional powers of Elliptic Operators. - Stanislav Harizanov; Raytcho D. Lazarov; Svetozar Margenov; Pencho Marinov (CoRR, 2019)

Numerical solution of fractional diffusion-reaction problems based on BURA. - Stanislav Harizanov; Raytcho D. Lazarov; Svetozar Margenov; Pencho Marinov (Comput. Math. Appl., 2020)

Spectral Fractional Laplacian with Inhomogeneous Dirichlet Data: Questions, Problems, Solutions. - Stanislav Harizanov; Svetozar Margenov; Nedyu Popivanov (CoRR, 2020)

A Survey on Numerical Methods for Spectral Space-Fractional Diffusion Problems. - Stanislav Harizanov; Raytcho D. Lazarov; Svetozar Margenov (CoRR, 2020)

Analysis of numerical methods for spectral fractional elliptic equations based on the best uniform rational approximation. - Stanislav Harizanov; Raytcho D. Lazarov; Svetozar Margenov; Pencho Marinov; Joseph E. Pasciak (J. Comput. Phys., 2020)

Reduced Sum Implementation of the BURA Method for Spectral Fractional Diffusion Problems. - Stanislav Harizanov; Nikola Kosturski; Ivan Lirkov; Svetozar Margenov; Yavor Vutov (LSSC, 2021)

Performance Study of Hierarchical Semi-separable Compression Solver for Parabolic Problems with Space-Fractional Diffusion. - Dimitar Slavchev; Svetozar Margenov (LSSC, 2021)

Neumann fractional diffusion problems: BURA solution methods and algorithms. - Stanislav Harizanov; Nikola Kosturski; Svetozar Margenov; Yavor Vutov (Math. Comput. Simul., 2021)

On the Application of a Hierarchically Semi-separable Compression for Space-Fractional Parabolic Problems with Varying Time Steps. - Dimitar Slavchev; Svetozar Margenov (NMA, 2022)

Parametric Analysis of Space-Time Fractional Pennes Bioheat Model Using a Collocation Method Based on Radial Basis Functions and Chebyshev Polynomials. - Hitesh Bansu; Svetozar Margenov (LSSC, 2023)

Study of Sparsification Schemes for the FEM Stiffness Matrix of Fractional Diffusion Problems. - Dimitar Slavchev; Svetozar Margenov (LSSC, 2023)

Performance Analysis and Parallel Scalability of Numerical Methods for Fractional-in-Space Diffusion Problems with Adaptive Time Stepping. - Svetozar Margenov; Dimitar Slavchev (Algorithms, 2024)

In Memoriam of Raytcho Lazarov. - Oleg P. Iliev; Svetozar Margenov (Comput. Methods Appl. Math., 2025)