PUBLICATIONS
Books
  1. M.A. Golberg and C.S. Chen, Discrete Projection Methods for Integral Equations, Computational Mechanics Publications, Southampton, Boston,1997 (425 pages).
  2. (Editors) C.S. Chen, C.A. Brebbia and D. Pepper, Boundary Element Technology XIII, WIT PRESS, June, 1999.
  3. C.S. Chen, Y.C. Hon, R.S. Schaback, Radial Basis Functions with Scientific Computation, under review.
  4. (Editors) C.S. Chen, A. Karageorghis, Y.S. Smyrlis, The Method of Fundamental Solutions – A Meshless Method, Dynamic Publishers, 2008.
Book Chapters
  1. M.A. Golberg and C.S. Chen, The method of fundamental solutions for potential, Helmholtz and diffusion problems, in Boundary Integral Methods - Numerical and Mathematical Aspects, ed. M.A. Golberg, Computational Mechanics Publications, 1998, pp.103-176.
  2. C.S. Chen, M.A. Golberg, R.S. Schaback, Recent developments of the dual reciprocity method using compactly supported radial basis functions,  in: Transformation of Domain Effects to the Boundary, eds. Y.F. Rashed and C.A. Brebbia, WIT Press, Southampton, Boston, pp. 183-225, 2003.
  3. C.S. Chen, C.M. Fan, J. Monroe, The method of fundamental solutions for solving elliptic partial differential equations with variable coefficients, in The Method of Fundamental Solutions – A Meshless Method, eds. C.S. Chen, A. Karageorghis, Y.S. Smyrlis, Dynamic Publishers, p. 75--105, 2008. 
  4.  P.H. Wen, C.S. Chen, Y.W. Liu, Shear deformable plate analysis by the method of fundamental solutions: static and dynamic cases, in The Method of Fundamental Solutions – A Meshless Method, eds. C.S. Chen, A. Karageorghis, Y.S. Smyrlis, Dynamic Publishers, p. 227--246, 2008. 
Referred Journals
  1. C.Y. Chan and C.S. Chen, A numerical method for semilinear singular parabolic quenching problems, Quarterly of Applied Mathematics, 47, pp 45-57, 1989.
  2. C.Y. Chan and C.S. Chen, Critical length for global existence of solutions for coupled semilinear singular parabolic problems, Quarterly Applied Mathematics, 47, pp 661-671, 1989.
  3. D. Wan, Peter Shiue and C.S. Chen, Value set of polynomial over finite fields, Proceedings of American Mathematical Society, Vol. 119, No. 3, 1993, pp 711 – 717.
  4. M. Golberg and C. S. Chen, On a method of Atkinson for evaluating domain integrals in the boundary element method, Applied Mathematics and Computation, 60, 1994, pp125-138.
  5. C. S. Chen and A. Muleshkov, Critical lengths for some nonlinear differential equations,Dynamic Systems and Applications, 3,1994, pp121-134.
  6. M. Golberg and C.S. Chen, The theory of radial basis functions applied to the BEM for inhomogeneous partial differential equations, Boundary Elements Communications, 5, 1994, pp 57-61.
  7. C.S. Chen, The method of fundamental solution for nonlinear thermal explosion, Communications in Numerical Methods in Engineering, 11, 1995, pp. 675-681.
  8. .C.S. Chen, The method of fundamental solutions and quasi-monte carlo methods for Possion equation, Lecture Notes in Statistics, 106, 1995, pp. 158-167.
  9. M.A. Golberg, C.S. Chen and S.R. Karur, Improve multiquadric interpolation for partial differential equations, Engineering Analysis with Boundary Elements, 18, 1996, 9-17.
  10. M.A. Golberg and C.S. Chen, A bibliography on radial basis function approximation, Boundary Elements Communications, 7(4), 1996, 155-163.
  11. M.A. Golberg ,C.S. Chen, H. Bowman and H. Power, Some comments on the radial basis functions in the dual reciprocity method, Computational Mechanics, 21, 1998, 141-148.
  12. C.S. Chen and Y.F. Rashed, Evaluation of thin plate spline based particular solution for Helmholtz-type operators for theDRM, Mechanics Research Communications, 25(2), 1998, 195-201.
  13. M. Zerroukat, H. Power and C.S. Chen, A numerical method for heat transfer problem using collocation and radial basis functions, International Journal of Numerical Methods in Engineering, 42, 1998, 1263-1278.
  14. C.S. Chen, M.A. Golberg and Y.C. Hon, Numerical justification of the method of fundamental solutions and the quasi-MonteCarlo method for Poisson-type equations, Engineering Analysis with Boundary Elements, 22, 1998, 61-69.
  15. C.S. Chen, M.A. Golberg and Y.F. Rashed, A mesh free method for linear diffusion equations, Numerical Heat Transfer, Part B, 33, 1998, 469-486.
  16. C.S. Chen, M.A. Golberg and Y.C. Hon, The method of fundamental solutions and quasi-Monte Carlo method for diffusion equations, International Journal of Numerical Methods in Engineering, 43, 1998, 1421-1436.
  17. M.A. Golberg, C.S. Chen and Y.F. Rashed, The annihilator method for computing particular solutions to partial differential equations, Engineering Analysis with Boundary Elements, 23, 1999, 275-279.
  18. C.S. Chen, C.A. Brebbia and H. Power, Dual receiprocity method using compactly supported radial basis functions, Communications in Numerical Methods in Engineering, 15, 1999, 137-150.
  19. M.A. Golberg, C.S. Chen and H. Bowman, Some recent results and proposals for the use of radial basis functions in the BEM, Engineering Analysis with Boundary Elements, 23, 1999, 285-296.
  20. A.S. Muleshkov, M.A. Golberg and C.S. Chen, Particular solutions of Helmholtz-type operators using higher order polyharmonic splines, Computational Mechanics, 24, 1999, 411-419.
  21. M.A. Golberg, C.S. Chen and M. Ganesh, Paticular solutions of the 3D modified Helmholtz-type equations using compcatly supported radial basis functions, Journal of Engineering Analysis with Boundary Elements, vol. 24, pp 539-547, 2000.
  22. M. Marcozzi, S. Choi and C.S. Chen, On the use of boundary conditions for variational formulations arising in financial mathematics, Journal of Applied Mathematics and Computation, Vol. 124, pp. 197-214, 2001.
  23. M.A. Golberg, C.S. Chen , A mesh free method for solving nonlinear reaction-diffusion equations, Journal of Computer Modeling in Engineering & Science, 2,  2001,  87-95.
  24. A. D.-H. Cheng, C.S. Chen, M.A. Golberg and Y.F. Rashed, BEM for thermoelasticity and elassticity with body force – a revisit, Engineering Analysis with Boundary Elements, Vol. 25, pp. 377-387, 2001.
  25. Y.F. Rashed, C.S. Chen and M.A. Golberg, Efficient evaluation of plate-half space interaction using contour integrals, Applied Mathematics Modeling, Vol. 25, 2001, 967-978.
  26. C.S. Chen,M.A. Golberg, M. Ganesh and A. H.-D. Cheng, Multilevel compact radial functions based computational schemes for someelliptic problems,  Journal of Computers and Mathematics with Application, Vol. 2, pp. 87 – 95, 2002.
  27. Jichun Li and C.S. Chen, A Simple efficient algorithm for interpolation between different grids in both 2D and 3D,  Mathematics and Computers in Simulation, 58(2), pp. 125-132, 2001.
  28. Jichun Li, Y.C. Hon and C.S. Chen, Numerical comparisons of two meshless methods using radial basis functions, Engineering Analysis with Boundary Elements, 26, pp. 205-225, 2002.
  29. Xin Li, C.H. Ho and C.S. Chen, Computational test of approximation of functions and their derivatives by radial basis functions,  Neural, Parallel and Scientific Computations,10, pp. 25-46,  2002.
  30. C.S. Chen, G. Kuhn, Jichun Li and G. Mishuris, Radial basis functions for solving near-singular Poisson’s Problems, Communication in Numerical Methods in Engineering, 19, 333-347, 2003.
  31. M.A. Golberg, A.S. Muleshkov, C.S. Chen and A. D-H Cheng, Polynomial Particular Solutions for Some Partial Differential Operators, Numerical Methods for Partial Differential Equations, 19, 112-133, 2003.
  32. Jichun Li, A D.-H. Cheng, C.S. Chen, A comparison of efficiency and error convergence of  multiquadric collocation methods and finite element method,  Engineering Analysis with Boundary Elements, 27, 251-257, 2003.
  33. Jichun Li and C.S. Chen, Some observations on unsymmetric radial basis functions collocation methods,  International Journal of Numerical Methods in Engineering, 57, 1085-1094, 2003.
  34. B. Sarler, Janez Perko, C.S. Chen, Radial basis function collocation method solution of natural convection in porous media,  International Journal of Numerical Methods for Heat and Fluid Flow, 14 (2), 187-212, 2004.
  35. X. Li, C.S. Chen, A mesh free method using Hyperinterpolation and Fast Fourier Transform for solving differential equations, Engineering Analysis with Boundary Elements, 28, 1253-1260, 2004.
  36. M.S. Ingber, C.S. Chen, and J.A. Tanski, A mesh free approach using radial basis functions and parallel domain decomposition for solving three dimensional diffusion equations,  International Journal for Numerical Methods in Engineering, 60, 2183-2201, 2004.
  37. C.J.S. Alves, C.S. Chen, Approximating functions and solutions of non homogeneous partial differential equations using the method of fundamental solutions, Advances in Computational Mathematics, 23, 125-142, 2005.
  38. C.S. Chen, A.S. Muleshkov, M.A. Golberg, R.M.M. Mattheij, A mesh free approach to solving the axisymmetric Poisson's equation, Numerical Methods for Partial Differential Equations, 21, 349-367,  2005. 
  39. A.S. Muleshkov, M.A. Golberg, C.S. Chen, Particular Solutions for Axisymmetric Helmholtz-Type Operators,  Engineering Analysis with Boundary Elements, 29(11), 1066-1076, 2005.
  40. S.Y. Reutskiy and C.S. Chen,  Approximation of Multivariate Functions and Evaluation of Particular Solutions using Chebyshev Polynomial and Trigonometric Basis Functions, International Journal in numerical methods in engineering, 67, 1811-1829, 2006.
  41. C.-S. Huang, S. Wang, C.S. Chen, and Z.-C. Li, A Radial Basis Collocation Method for Hamilton-Jacobi-Bellman Equations,  Automatica, 42, 2201-2207, 2006.
  42. D. L. Young , T. K. Wong , C. W. Chen , C.M. Fan , C.S. Chen,  Solution of Maxwell’s equations by meshless time domain method, CMC, 2,  267-276, 2005.
  43. D. L. Young , C.C. Tsai, Y.C. Lin, C.S. Chen, The Method of Fundamental Solutions for Plate Vibrations, CMC,  4, 1-10, 2006.
  44. H.A. Cho, C.S. Chen, and M.A. Golberg, Some comments on mitigating the ill-conditioning of the method of fundamental solutions, Engineering analysis with Boundary Elements, 30, 405-410, 2006.
  45. Andreas Karageorghis, C.S. Chen, and Y-S Smyrlis, A matrix decomposition method for solving large scale problems using radial basis functions - approximation of functions and their derivatives, Applied Numerical Mathematics, 57, 304-319, 2007.
  46. C.S. Chen, Sung-wook Lee, C.-S. Huang, The method of particular solutions using Chebyshev polynomial based functions,  International Journal of Computational Methods, Vol. 4, No. 1, 15-32, 2007. 
  47. E.V. Glushkov, N.V. Glushkova, C.S. Chen, Semi-analytical solution to heat-transfer problems using Fourier transform technique, radial basis functions and the method of fundamental solutions, Numerical Heat Transfer, Part B, 52 (5), 409-427, 2007. 
  48. Radovan Gospavic, Viktor Popov, Milesa Sreckovic, C.S. Chen, DRM-MD approach for modeling laser–material interaction with axial symmetry, Engineering Analysis with Boundary Elements, 31, 200-208, 2007.
  49. Jiu Ding and C.S. Chen, Particular solutions of some elliptic partial differential equations via recursive formulas, Journal of University of Science and Technology of China, 37(11), 1338-1347, 2007.
  50. Sergiy Reutskiy, C.S. Chen, Haiyan Tian, A meshless method using Chebyshev interpolation and trigonometric basis function for solving heat conduction problems, International Journal Numerical Methods in Engineering, 74, 1621-1644, 2008.
  51.  Haiyan Tian, Sergiy Reutskiy, C.S. Chen, A basis function for approximation and the solution of partial differential equations, Numerical Partial Differential Equations, 24, 1018-1036, 2008. 
  52. J. Ding, H.Y. Tian, C.S. Chen, The recursive formulation of particular solutions for some elliptic PDEs with polynomial source functions, Communication in Computational Physics, 5, 942-958, 2008.
  53. A. Tadeu, C.S. Chen, J. Antonio, Nuno Simoes, A Boundary Meshless Method for Solving Heat Transfer Problems using Fourier Transform, submitte.
  54. C.S. Chen, S.Y. Reutskiy, V.Y. Rozov, The method of the fundamental solutions and its modifications for electromagnetic field problems, Computer Assisted Mechanics and Engineering Sciences, 16, 21-33, 2009.
  55. C.C. Tsai, A. H.-D. Cheng, C.S. Chen, Particular solution of splines and monomials for polyharmonic and products of Helmhlotz operators, Engineering Analysis with Boundary Elements, 33, 514-521, 2009.
  56. C.M. Fan, C.S. Chen, J. Monroe, The Method of fundamental Solutions for solving convection-diffusion equations with variable coefficients, International Journal of Advances in Applied Mathematics and Mechanics, 1, 215-230, 2009.
  57.  C.S. Chen, S.Y. Reutskiy, V.Y. Rozov, The method of the fundamental solutions and its modifications for electromagnetic field problems, Computer Assisted Mechanics and Engineering Sciences, 16, 21-33, 2009.
  1. C.C. Tsai, C.S. Chen, Tai-Wen Hsu, The method of particular solutions for solving axisymmetric polyharmonic  and poly-Helmholtz equation, Engineering Analysis with Boundary Elements,  33, 1396-1402, 2009.
  2. A. Karageorghis, C.S. Chen, and Y.--S. Smyrlis, Matrix decomposition RBF algorithm for solving 3D elliptic problems,  Engineering Analysis with Boundary Elements,  33, 1368-1373, 2009.
  3. Guangming Yao, C.S. Chen, C.C. Tsai, A Revisit on the derivation of the particular solution for the differential operator \Delta^{2} - \lambda^{2}, to appear in Advances in Applied Mathematics and Mechanics. 

  4. P.H. Wen, C.S. Chen, The method of particular solution for solving scalar wave equations, to appear in Communication in Numerical Methods in Engineering.
  5. C.S. Chen, C.M. Fan, P.H. Wen, The Method of Particular Solutions for Solving Certain Partial Differential Equations, submitted.
  6. C.S. Chen, C.M. Fan, P.H. Wen,  The Method of Particular Solutions for Solving Elliptic Problems with Variable Coefficients, submitted.
  7. Radovan Gospavic, Nasimul Haque, Viktor Popov, C.S. Chen, Extended method of fundamental solutions implemented with two different solvers, submitted.
  8. Ming Li, Y.C. Hon, C.S. Chen,  A meshless method for solving nonhomogeneous Cauchy Problems,  submitted.  
  9. Ming Li, C.S. Chen, C.H. Tsai, The method of approximate Particular solutions for solving parabolic partial differential equations with variable coefficients, submitted.
Refereed Proceeding
  1. C.Y. Chan and C. S. Chen, A nonlinear singular parabolic initial boundary value problem, ed. V. Lakshmikantham, Nonlinear Analysis and Applications, Marcel Dekker, New York,1987, pp 115-119.
  2. A. Muleshkov and C.S. Chen, A note on the critical length for mixed boundary value problems, Proceedings of the First International Conference on Dynamic System and Applications, 1, 271-276, 1994.
  3. C.S. Chen and M. Golberg, A domain embedding method and the quasi-monte carlo method for Poisson's Equation, Boundary Elements XVII, Computational Mechanics Publications, Boston, Southampton, 1995, 115-122.
  4. C.Y. Chan and C.S. Chen, Method of fundamental solutions for multi-dimensional quenching problems, Proceeding of Dynamic Systems and Applications, 2, ed. G.S. Ladde and M. Sambandham, 1996, 115-121.
  5. C.S. Chen and M.A. Golberg, Las Vegas method for diffusion equations, Boundary Element Technology XII, eds. J.I. Frankel, C.A. Brebbia & M.A.H. Aliabadi, Computational Mechanics Publications, 1997, 299-308.
  6. C.S. Chen and C.A. Brebbia, The dual reciprocity method for Helmholtz-type operators, Boundary Element Method XX, eds. A. Kassab, C.A. Brebbia, M. Chopra, Computationa Mechanics Publications, 1998, 495-504.
  7. M. Marcozzi, S. Choi and C.S. Chen, RBF and optimal stopping problems; an application to the pricing of Vanilla options on one risky asset, Boundary Element Technology XIII, eds. C.S. Chen, C.A. Brebbia, D.W. Pepper, WIT Press, Boston, Southampton, pp. 345-354, 1999.
  8. C.S. Chen, M. Marcozzi and S. Choi, The method of fundamental solutions and compactly supported radial basis functions - a meshless approach to 3D problems, Boundary Element Methods XXI, eds. C.A. Brebbia, H. Power, WIT Press, Boston, Southampton, pp. 561-570, 1999.
  9. C.S. Chen, A.S. Muleshkov and M.A. Golberg, The numerical evaluation of particular solutions for Poisson's equation - a revisit, Boundary Element Methods XXI, eds. C.A. Brebbia, H. Power, WIT Press, Boston, Southampton, pp. 313-322,1999.
  10. M.A. Golberg, C.S. Chen & A.S. Muleshkov, The method of fundamental solutions for diffusion equations, Boundary Element Technology XIII, eds. C.S. Chen, C.A. Brebbia, D.W. Pepper, WIT Press, Boston, Southampton, pp. 377-386,1999.
  11. Y.F. Rashed, C.S. Chen and M.A. Golberg, Equivalent boundary integrals for Boussinesq - Cerruti half interaction with thin plates, Boundary Element Methods XXI, eds. C.A. Brebbia, H. Power, WIT Press, Boston, Southampton, pp. 615-625,1999.
  12. C.S. Chen, M.A. Golberg, M. Ganesh, A. H-D. Cheng, The dual reciprocity method using multilevel method compactly supported radial basis functions, Boundary Element Methods XXII, eds. C.A. Brebbia, H. Power, WIT Press, Boston, Southampton, pp. 555-564, 2000
  13. A.H.-D. Cheng, C.S. Chen, M.A. Golberg and D.-L. Young, Radial basis functions, polynomial basis functions, particular solutions and DRBEM, 14th Engineering Mechanics Conference, Austin, Texas, May 21-24, 2000 (in CD ROM).
  14. A.S. Muleshkov, C.S. Chen, M.A. Golberg and A.H-D. Cheng, Analytic particular solutions for inhomogeneous Helmholtz-type equations, Advances in Computational Engineering & Sciences, eds. S.N. Atluri, F.W. Brust, Tech Science Press, Vol. 1, pp. 27-32, 2000.
  15. M.A. Golberg, C.S. Chen and V. Popov, A mesh free method for nonlinear reaction-diffusion equations, Advances in Computational Engineering & Sciences, eds. S.N. Atluri, F.W. Brust, Tech Science Press, Vol. 1, pp. 2-7, 2000
  16. J. Jerko, C.S. Chen, B. Sarler, A polygone-free to steady natural convection in solid-liquid systems, to appear in Moving Boundaries VI.
  17. Xin Li, C.H. Ho and C.S. Chen, Computational test of approximation of functions and their derivatives by radial basis functions, ICES’01 Conference Proceeding in CD ROM.
  18. M. Ludian, Jichun Li and C.S. Chen, The DRM using Helmholtz-type operators, ICES’01 Conference Proceeding in CD ROM.
  19. C.J.S. Alves, C.S. Chen and B. Sarler, The method of fundamental solutions for solving Poisson problems, Boundary Elements XXIV, eds. C.A. Brebbia, A. Tadeu and V. Popov, WIT Press, Southampton, Boston, pp. 67-76, 2002.
  20. A.S. Muleshkov, M.A. Golberg, A.H-D. Cheng and  C.S. Chen, Polynomial particular solutions for Poisson problems, Boundary Elements XXIV, eds. C.A. Brebbia, A,. Tadeu and V. Popov, WIT Press, Southampton, Boston, pp. 115-124, 2002.
  21. J. Li, C.S. Chen, D. Pepper and Y. Chen, Mesh-free method for groundwater modeling, Boundary Elements XXIV, eds. C.A. Brebbia, A. Tadeu and V. Popov, WIT Press, Southampton, Boston, pp. 115-124, 2002.
  22. B. Sarler, R. Vertnik; M. Savic, C.S. Chen, A meshless approach for hallow-brick temperature field, Advances in Computational Engineering & Sciences, eds. S.N. Atluri, D.W. Pepper, Tech Science Press, Los Angels, #154, 2002.
  23. D.W. Pepper, C.S. Chen , A meshless method for modeling heat transfer, Advances in Computational Engineering & Sciences, eds. S.N. Atluri, D.W. Pepper, Tech Science Press, Los Angels, #156, 2002. 
  24. B. Sarler, J. Perko and C.S. Chen, Natural convection in Porous Media -radial basis function collocation method solution of the Darcy model,  Fifth World Congress on Computational Mechanics, 2002.
  25. D.W. Pepper, C.S. Chen and Jichun Li, Modeling heat transfer using adaptive finite elements, boundary elements, and meshless methods, to appear in Advanced Computational Methods in Heat Transfer, eds. B. Sunden and C.A. Brebbia, WIT Press, Southampton, Boston, 2002.
  26. 28.    Jichun Li, A. D.-H. Cheng and C.S. Chen, On the efficiency and exponential convergence of multiquadric collocation methods compared with finite element method, Eng. Anal. with Boundary Elements, 27, pp. 251-257, 2003.
  27.  M. S. Ingber and C. S, Chen, A parallel domain decomposition approach for solving diffusion equations using the method of fundamental solutions, in Proceedings of the 6th ASME-JSME Thermal Engineering Joint Conference, AJTEC2003, Hawaii Island, Hawaii, Japan Society of Mechanical Engineers (2003).
  28.  A.S. Muleshkov, M.A. Golberg, C.S. Chen, The method of fundamental solutions for solving the axisymmetric Poisson equation, Advances in Computational & Experimental Engineering & Sciences, eds. S.N. Atluri, D.E. Beskos; D. Polyzos, 2003. 
  29. Xin Li, C.S. Chen, Computation of particular solutions by Hyperinterpolation and Fast Fourier Transform, Advances in Computational & Experimental Engineering & Sciences, eds. S.N. Atluri,, D.E. Beskos; D. Polyzos, 2003, CD-ROM.
  30.  B. Sarler, I. Kovacevic, and C.S. Chen, A mesh-free solution of temperature in direct-chill cast slabs and billets. V: MAMMOLI, A.A. (ed.), BREBBIA, Carlos Alberto (ed.). Moving boundaries VII  computational modelling of free and moving boundary problems, (Computational and experimental methods, vol. 10). Southampton, Boston: WIT Press, 2003, pp.271-280. 
  31. Valjean Elander, C. S. Chen, Darrell Pepper, The Method of Fundamental Solutions for Axisymmetric Problems, 2003 ASME Summer Heat Transfer Conference Proceeding, CD ROM.    
  32. A. Tadeu, L. Godinho, C. S., ChenPerformance of the BEM, MFS, and RBF Collocation Method in a 2.5D wave propagation analysis, Boundary Elements XXVII, eds. A. Kassab, C.A. Brebbia, E. Divo, and D. Poljak, p.143-153, 2005.
  33. B. Šarler, T. Tran-Cong, C.S. Chen, Meshfree direct and indirect local radial basis function collocation formulations for transport phenomena, Boundary Elements XXVII, eds. A. Kassab, C.A. Brebbia, E. Divo, and D. Poljak, p.417-427, 2005.
  34.  J. Li, C.S. Chen, Y.C. Hon, Radial basis meshless methods for unsaturated flow problems, Boundary Elements XXVII, eds. A. Kassab, C.A. Brebbia, E. Divo, and D. Poljak, p. 25-35, 2005.
  35. B. Šarler, Janez Perko, C.S. Chen, Numerical Diffusion of Meshless Diffuse Approximate Method, International Conference on Computational & Experimental Engineering, CD-ROM, 2006. 
  36. H.Y. Tian, S. Reutskiy, and C.S. Chen, New basis functions and their applications to PDEs, Proceedings of International Conference on Computational & Experimental Engineering and Sciences, 851-857, 2007.
  37. R. Gospavic, N. Haque, V. Popov, C.S. Chen, Comparison of two solvers for the extended method of fundamental solutions,  Boundary Elements and Other Meshless Reduction Method XXX, eds. P. Skerget and C.A. Brebbia, p. 191-199, 2008.