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       Ganzha, M., Georgiev, K., Lirkov, I., Paprzycki,
      M., An application of partition method for solving 3D Stokes
      equation. Computers & Mathematics with Applications, 70, Elsevier, 2015,
      ISSN:0898-1221, DOI: 10.1016/j.camwa.2015.04.025, 2762-2772. 
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        Georgiev, I., Harizanov, S., Vutov, Y., Supervised
      2-Phase Segmentation of Porous Media with Known Porosity. Lecture Notes
      in Computer Science, 9374, Springer, 2015, ISSN:0302-9743, DOI: 10.1007/978-3-319-26520-9_38, 343-351. 
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       Georgiev, I., Ivanov, E., Margenov, S., Vutov,
      Y., Numerical Homogenization of Epoxy-Clay Composite Materials. LNCS,
      8962, Springer, 2015, ISBN:978-3-319-15585-5, ISSN:0302-9743, DOI: 10.1007/978-3-319-15585-2_15, 130-137. 
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       Harizanov, S., Margenov, S., Zikatanov, L., Fast
      Constrained Image Segmentation Using Optimal Spanning Trees. Lecture
      Notes in Computer Science, 9374, Springer, 2015, ISBN:978-3-319-26519-3,
      ISSN:0302-9743, DOI: 10.1007/978-3-319-26520-9_2, 15-29. 
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       Ilieva, N., Dai, J., Sieradzan, A., Niemi,
      A., Solitons And Protein Folding: An In Silico Experiment. AIP
      Conference Proceedings, 1684, AIP Publishing, 2015, ISSN:0094-243X, DOI:
      10.1063/1.4934290, 030006-1-030006-10. 
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       Kosturski, N., Lirkov, I., Margenov, S., Vutov,
      Y., Thermoelectrical Tick Removal Process Modeling. Lecture Notes in
      Computer Science, 9374, Springer, 2015, ISSN:0302-9743, DOI: 10.1007/978-3-319-26520-9_41, 369-376. 
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       Kosturski, N., Margenov, S., Popov, P., Simeonov, N.,
      Vutov, Y., Performance Analysis of Block AMG Preconditioning of
      Poroelasticity Equations. Lecture Notes in Computer Science, 9374,
      Springer, 2015, ISBN:978-3-319-26519-3, ISSN:0302-9743, DOI: 10.1007/978-3-319-26520-9_42, 377-384. 
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       Lilkova, E., Petkov, P., Ilieva, N., Litov,
      L., Towards Molecular Modelling of the Impact of Heparin-Derived
      Oligosaccharides on hIFN-g Binding. AIP Conference Proceedings, 1684,
      AIP Publishing, 2015, ISSN:0094-243X, DOI: 10.1063/1.4934292, 030008-1 - 030008-10. 
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       Liolios, An., Elenas, A., Liolios, A., Radev, S.,
      Georgiev, K., Georgiev, I., Tall RC buildings environmentally degradated
      and strengthened by cables under multiple earthquakes: A numerical
      approach, Lecture Notes in Computer Science (LNCS), 8962, Springer,
      2015, ISSN:0302-9743, DOI: 10.1007/978-3-319-26520-9_46, 187-195. 
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        Liolios, An., Karabintis, A., Liolios A., Radev, S.,
      Georgiev, K., Georgiev, I., A computational approach for the seismic
      damage response under multiple earthquakes excitations of adjacent RC
      structures strengthened by ties, Computers and Mathematics with
      Applications, 70, 11, Elsevier, 2015, ISSN:0898-1221, DOI: 10.1016/j.camwa.2015.08.012, 2742-2751. 
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       Mihajlovic, M., Bongo, L. A., Ciegis, R., Frasheri,
      N., Kimovski, D., Kropf, P., Margenov, S., Neytcheva, M., Rauber, T.,
      Runger, G., Trobec, R., Wuyts, R., Wyrzykowski, R., Gong,
      J., Applications for ultrascale computing. Supercomputing frontiers and
      innovations, 2, 1, 2015, ISSN:2313-8734, DOI: 10.14529/jsfi1501, 19-48. 
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Mironova, M., Ivanova, M., Naidenov, V., Georgiev, I., Stary, J., Advanced
study of fiberreinforced self-compacting concrete. AIP Conf. Proc., 1684, AIP,
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Nikolova, S., Toneva, D., Georgiev, I., A case of skeletal dysplasia in bone
remains from a contemporary male individual. Acta Morphologica et
Anthropologica, 22, Prof. Marin Drinov Publishing House of Bulgarian Academy
of Sciences, 2015, ISBN:0861-0509, 97-107
    
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       Ribarics, R., Kenn, M., Karch, R., Ilieva, N,
      Schreiner, W., Geometry Dynamics of α-Helices in Different Class I Major
      Histocompatibility Complexes. Journal of Immunology Research, 2015,
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       Ribeiro, P., Stoykov, S., Forced periodic vibrations
      of cylindrical shells in laminated composites with curvilinear
      fibres. Composite Structures, 131, Elsevier, 2015, ISSN:0263-8223, DOI: 10.1016/j.compstruct.2015.05.050, 462-478. 
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       Schreiner, W., Karch, R., Ribarics, R., Cibena, M.,
      Ilieva, N., Relative Movements of Domains in Large Molecules of the
      Immune System. Journal of Immunology Research, 2015, Article ID 210675,
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       Stoykov, S., Harizanov, S., Margenov, S., Space
      discretization by B-Splines on discontinuous problems in structural
      mechanics. Proceedings of the 7th Balkan Conference on Informatics, ACM,
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       Stoykov, S., Hofreither, C., Margenov,
      S., Isogeometric Analysis for Nonlinear Dynamics of Timoshenko
      Beams. Lecture Notes in Computer Science, 8962, Springer, 2015,
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       Stoykov, S., Litak, G., Manoach, E., Vibration energy
      harvesting by a Timoshenko beam model and piezoelectric transducer. The
      European Physical Journal Special Topics, 224, 14, Springer, 2015,
      ISSN:1951-6355, DOI: 10.1140/epjst/e2015-02587-3, 2755-2770. 
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       Stoykov, S., Manoach, E., Margenov, S., An efficient
      3D numerical beam model based on cross sectional analysis and Ritz
      approximations. ZAMM - Journal of Applied Mathematics and Mechanics,
      Wiley, 2015, ISSN:1521-4001, DOI: 10.1002/zamm.201400139. 
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       Stoykov, S., Margenov, S., Scalability of Shooting
      Method for Nonlinear Dynamical Systems. Lecture Notes in Computer
      Science, 9374, Springer, 2015, ISSN:0302-9743, DOI: 10.1007/978-3-319-26520-9_45, 401-408. 
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       Sviercoski, R., Efendiev, Y., Mohanty, B., Yuan,
      Y., Upscaling the coupled water flow and heat transfer in the subsurface
      – Comparison between numerical and field data. Application of
      Mathematics in Technical and Natural Sciences, 1684, American Institute
      of Physics, 2015, ISBN:978-0-7354-1331-3, ISSN:0094243X, DOI: 10.1063/1.4934294, 030010-030010. 
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       Sviercoski, R., Popov, P., Margenov, S., An
      analytical coarse grid operator applied to a multiscale multigrid
      method. Journal of Computational and Applied Mathematics, 287, 15,
      Elsevier, 2015, ISSN:0377-0427, DOI: 10.1016/j.cam.2015.03.001, 207-219. 
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  PIM Supplemental Computing Element via HDL. Information Technologies and
  Control, 12(2), John Atanasoff Society of Automatics and
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       Wasielewska, K., Ganzha, M., Paprzycki, M., Bădică,
      C., Ivanovic, M., Lirkov, I., Semantic Technologies in a Decision
      Support System. Application of Mathematics in Technical and Natural
      Sciences, 1684, American Institute of Physics, 2015, ISSN:0094-243X,
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       Zlatev, Z., Georgiev, K., Dimov, I., Selecting
      Explicit Runge-Kutta Methods with Improved Stability
      Properties. Large-Scale Scientific Computing, 9374, Springer
      International Publishing, 2015, ISSN:978-3-319-26519-3; Online
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      O. Axelsson, P. Boyanova, M. Kronbichler, M.  Neytcheva, and X. Wu, Numerical and computational efficiency of solvers for two-phase problems, Computers and  Mathematics with Applications, 65(3), 2013, 301-314, ISSN: 0898-1221 
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      P. Boyanova, M. Neytcheva, Efficient numerical solution of discrete multi-component Cahn-Hilliard  systems, Computers and Mathematics with Applications, 10.1016/j.camwa.2013.10.013, ISSN:  0898-1221 
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Maria  Ganzha, Ivan Lirkov, Marcin Paprzycki, Comparative analysis of high
performance  solvers for solving Stokes equation, Application of Mathematics
in Technical  and Natural Sciences, AMiTaNS 2013, Michail D. Todorov ed., AIP
Conference  Proceedings, 1561, 347–354, 2013. ISBN
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      I.  Farago, K. Georgiev, A. Havasi and Z. Zlatev, Efficient numerical methods for scientific applications: Introduction,  Computers and Mathematics with Applications, Vol. 65  (3), Elsevier. ISSN: 0898-1221. Doi: 10.1016/j.camwa.2012.07.005, 297 - 300  
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K. Georgiev, N. Kosturski, S. Margenov, Y. Vutov, Parallel algorithms for
adaptive time-stepping in radiofrequency liver ablation simulation:
implementation on an IBM Blue Gene/P computer,
Preprints
of Position Papers of the Federated Conference on Computer Science and
  Information Systems, M. Ganzha, L. Maciaszek, M. Paprzycki (editors),
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      Irina Georgieva, Clemens Hofreither, Interpolation
      of harmonic functions based on  Radon projections, Numerische
      Mathematik, 2013.  DOI: 10.1007/s00211-013-0592-y.  
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      N.  Kosturski, S. Margenov, Y. Vutov, Computer Simulation of RF Liver Ablation on  an MRI Scan Data, AIP Conf. Proc. 1487 (2013), 120-126, ISSN: 0094-243X, 
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      J.  Kraus, M. Lymbery, S. Margenov, Robust  Multilevel Methods for Quadratic Finite Element Anisotropic Elliptic Problems,  Numerical Linear Algebra With Applications (2013), DOI: 10.1002/nla.1876, ISSN:  1099-1506, 
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J.  Kraus, M. Lymbery, S. Margenov: Robust  multilevel methods for
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Paprzycki, Maria Ganzha,
Paweł Gepner, Performance Evaluation of MPI/OpenMP Algorithm for 3D Time
Dependent Problems, Annals of Computer Science and Information
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L. Maciaszek, M. Paprzycki
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      K.  Wasielewska, M. Ganzha, M. Paprzycki, I. Lirkov,
      Developing Ontological Model  of Computational Linear Algebra —
      Preliminary Considerations, Application of  Mathematics in Technical and
      Natural Sciences, AMiTaNS 2013, Michail D. Todorov  ed., AIP Conference
      Proceedings, 1561, 133–143, 2013. ISBN
      978-0-7354-1189-0,  doi: 10.1063/1.4827222.
       
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      Zahari Zlatev, Ivan Dimov, and Krassimir Georgiev. Sensitivity of European Pollution Levels to  Changes of Human-made Emissions, Chapter of eBook entitled Advanced  Numerical Methods for Complex Environmental Models: Needs and Availability (I. Farago, A. Havasi, Z. Zlatev, Eds),  eISBN: 978-1-60805-778-8, ISBN: 978-1-60805-777-1.
       
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      Zahari Zlatev, Krassimir Georgiev, and Ivan Dimov. Parallel  Computations in a Large-scale Air Pollution Model, Chapter of eBook  entitled Advanced Numerical Methods for Complex Environmental Models: Needs and  Availability (I. Farago, A. Havasi, Z. Zlatev, Eds), eISBN: 978-1-60805-778-8,  ISBN: 978-1-60805-777-1
       
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      Z. Zlatev, K. Georgiev, I. Dimov. Influence of climatic changes on pollution levels in the Balkan  Peninsula. Computers and Mathematics with Applications, Vol. 65 (3),  “Efficient Numerical Methods for Scientific Applications”. Elsevier. ISSN:  0898-1221. Doi: 10.1016/j.camwa.2012.07.005. 
         
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Z. Zlatev, K. Georgiev, Applying approximate  LU-factorizations as
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       Y. Efendiev, J. Galvis,  R.D. Lazarov, S. Margenov, J. Ren, Robust Two-level Domain Decomposition  Preconditioners for High-contrast Anisotropic Flows in Multiscale Media,  Comput. Meth. Appl. Math., Vol.12 (4), 1-12 (2012), ISSN: 1609-9389  
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       K.  Liolios, V. Tsihrintzis, K. Moutsopoulos, I. Georgiev, K. Georgiev, Computational  approach for remediation procedures in horizontal subsurface flow constructed  wetlands, Lecture Notes on Computer Science (LNCS), 7116, pp.  299–306 (2012), ISSN: 0302-9743, ISBN 978-3-642-31499-5,   
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       K.  Georgiev, T. Ostromsky, Z. Zlatev, New Parallel Implementation of an Air  Pollution Computer Model – Performance Study on an IBM Blue Gene/P Computer, Lecture  Note on Computer Science (LNCS), 7116, pp. 283–290 (2012), ISSN: 0302-9743, ISBN 978-3-642-31499-5,  
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       K.  Georgiev, Z. Zlatev, Numerical experiments with applying  approximate LU-factorizations as preconditioners for solving SLAEs with  coefficient matrices from the "Sparse Matrix Market", AIP Conference Proceedings, Volume 1487, pp. 104-111 (2012) ISBN: 978-0-7354-1099-2 
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       Tz. Ostromsky, K.  Georgiev, Z. Zlatev, An efficient highly parallel implementation of a large  air pollution model on an IBM Blue Gene/P supercomputer, AIP Conference Proceedings, Volume 1487,  pp. 135-142 (2012) ISBN:  978-0-7354-1099-2 
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       Z.  Zlatev, I. Dimov, I. Farago, K. Georgiev, A. Havasi, Tz. Ostromsky, Solving advection equations by applying the  Crank-Nicolson scheme combined with the Richardson extrapolation, Int. J.  of Differential Equation, Vol. 2011,  Article ID 520840, 16 pages, doi: 10.1155/2011/520840, ISSN: 1687-9651,  
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       Z. Zlatev, K. Georgiev,  I. Dimov, Influence of
      climatic  changes on pollution levels in the Balkan Peninsula,
      Computers & Mathematics with  Applications, doi: 10.1016/j.camwa.2012.07.006, ISSN:  0898-1221 
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G. Bencheva, L. Gartcheva, A. Michova, and M. Guenova,
  Computer Modeling of the Immune System Reconstruction after Peripheral Blood
  Stem Cell Transplantation, G.Adam, J.Busa, and M. Hnatic (Eds.): MMCP 2011,
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       G.  Bencheva, Computer modelling of haematopoietic
      stem cells migration, Computers  and Mathematics with Applications
      vol. 64(3) (2012) pp. 337-349.  (doi: 10.1016/j.camwa.2012.02.045) (ISSN: 0898-1221,  
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       G.  Bencheva, On the choice of limiters in a numerical approximation of a  chemotaxis system with non-linear boundary conditions, Application of  Mathematics in Technical and Natural Sciences, AIP Conf. Proc. 1487, 305-313  (2012); doi: 10.1063/1.4758972, 2012 American Institute of Physics (ISSN:  0094-243X, ISBN: 978-0-7354-1099-2,  
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       Maria  Ganzha, Nikola Kosturski, and Ivan Lirkov, Improving the efficiency of parallel  alternating directions algorithm for time dependent problems, Application of  Mathematics in Technical and Natural Sciences, Michail D. Todorov ed., AIP  Conference Proceedings, Volume 1487, 322-328. ISBN:  978-0-7354-1099-2,  
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       Ivan  Lirkov, Marcin Paprzycki, Maria Ganzha, Performance Analysis of Parallel  Alternating Directions Algorithm for Time Dependent Problems, 9th international  conference on Parallel Processing and Applied Mathematics, PPAM  2011, Part I, Roman Wyrzykowski, Jack Dongarra, Konrad Karczewski, Jerzy  Waśniewski eds., Lecture notes in computer science, Springer, 2012, 173-182. ISSN 0302-9743,  
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       Katarzyna Wasielewska, Michał Drozdowicz, Paweł Szmeja,  Maria Ganzha, Marcin Paprzycki, Ivan Lirkov, Dana Petcu, and Costin Bădică,  Agents in Grid System — Design and Implementation, Large-Scale Scientific  Computing, I. Lirkov, S. Margenov, J. Waśniewski eds., Lecture notes in  computer science, 7116, Springer, 2012, 662-669. ISSN 0302-9743,  
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       Lymbery,  M., Margenov, S.: Robust Semi-Coarsening Multilevel Preconditioning of  Biquadratic FEM Systems, Cent. Eur. J. Math. 10(1) (2012), pp. 357-369, DOI:  10.2478/s11533-011-0082-3,  
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       Kraus, J., Lymbery, M., Margenov, S.:  Semi-Coarsening AMLI Preconditioning of Higher Order Elliptic Problems, AIP  Proceedings (AmiTaNS'12 Conference), vol. 1487, pp. 30-41, DOI:  10.1063/1.4758939,  
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       N.  Kosturski, S. Margenov, and Y. Vutov, Computer simulation of RF liver  ablation on an MRI scan data, AIP Conf. Proc. 1487, pp. 120-126, ISBN:  978-0-7354-1099-2,  
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       N.  Kosturski, S. Margenov, and Y. Vutov, Improving the Efficiency of Parallel FEM  Simulations on Voxel Domains, LSSC 2011, LNCS 7116, pp. 574-581, ISBN  978-3-642-29842-4,  
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       N.  Kosturski, S. Margenov, Y. Vutov, Balancing the Communications and  Computations in Parallel FEM Simulations on Unstructured Grids, PPAM 2011,  Part II, LNCS 7204, pp. 211–220, ISBN 978-3-642-31499-5 
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       P.  Boyanova, I. Georgiev, S. Margenov, and L. Zikatanov, Multilevel  preconditioning of graph-Laplacians: Polynomial approximation of the pivot  blocks inverses,  Mathematics and Computers in Simulation,  
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              K. Liolios, S. Radev, A. Liolios, I. Georgiev, K. Georgiev, A Linear Complementarity Numerical Approach to the Non-Convex Problem of Structures Environmentally Damaged and Strengthened by Cable-bracings, Biomath 1 (2012), Article ID: 1212107, (see: KrG_paper-6_2012)
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              P. Boyanova, M. Neytcheva, Efficient numerical solution of discrete multi-component Cahn-Hilliard systems, TR 2012-009, ISSN 1404-3203, Institute for Information Technology, Uppsala University, April 2012.
               
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              P. Boyanova. On numerical solution methods for block-structured discrete systems, PhD thesis, Department of Information Technology, Uppsala University, Sweden, 2012, ISSN 1651-6214; 942.
               
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              П. Боянова. ОПТИМАЛНИ МНОГОНИВОВИ МЕТОДИ ЗА НЕКОНФОРМНИ КРАЙНИ ЕЛЕМЕНТИ, Автореферати на дисертации на Института по информационни и комуникационни технологии при Българската академия на науките 2/2012, e-ISSN: 1314-635.
               
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              S. Stoykov, P. Ribeiro, Free and forced nonlinear vibrations of 3D beams with non-symmetrical cross section, ECCOMAS 2012, September 10-14, 2012 Vienna, Austria (2 стр. Абстракт).
               
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              V. Stojanović, P. Ribeiro, S. Stoykov, A new p-version finite element method for non-linear vibrations of damaged Timoshenko beams, ECCOMAS 2012, September 10-14, 2012 Vienna, Austria (2 стр. Абстракт)
               
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              M. Taralov, V. Taralova, P. Popov, O. Iliev, A. Latz, J. Zausch, Report on Finite Element Simulations of Electrochemical Processes in Li-ion Batteries with Thermic Effects, Fraunhofer ITWM, Bericht 221, 2012, 33, ISSN 1434-9973
               
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              Rosangela F. Sviercoski, Review on Analytical Approximation for the Generalized Laplace's Equation and Applications in Multiscale Modeling, Proc. Of BGSIAM’12 Annual Meeting, December 19-20, 2012, Sofia, Bulgaria, ISSN 1314 7161
               
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              K. Georgiev, N. Kosturski, I. Lirkov, S. Margenov, Y. Vutov, Parallel Solvers for Incompressible Navies-Stokes Equations and Scalable Tools for FEM Applications, Available online at: http://www.prace-ri.eu/IMG/pdf/scalable-tools-for-fem-applications.pdf