L. Šumichrast and M. Ehrhardt, "On the Transparent Boundary Conditions (TBC) for the Parabolic Wave Equation" in VXV International Symposium on Theoretical Engineering, 2009, pp. 1--1.

K. Mohaghegh, R. Pulch, M. Striebel and J. Maten, "Model order reduction for semi-explicit systems of differential algebraic systems" in Proceedings MATHMOD 09 Vienna - Full Papers CD Volume, I. Troch and F. Breitenecker, Eds. 2009, pp. 1256-1265.

S. Konermann, M. Günther, R. Pulch, A. Bartel and M. Stein,Method of Measuring the Thickness Profile of a Film Tube, Dec. 2009.

A. Verhoeven, J. Maten, M. Striebel and R. Mattheij, "Model Order Reduction for Nonlinear {IC} Models" in System Modeling and Optimization, IFIP AICT 312, A. Korytowski and K. Malanowski and W. Mitkowski and M. Szymkat, Eds. Springer Berlin Heidelberg, 2009, pp. 476--491.

M. Ehrhardt, J. Sun and C. Zheng, "Evaluation of scattering operators for semi-infinite periodic arrays", Commun. Math. Sci., vol. 7, no. 2, pp. 347--364, 2009.

M. Ehrhardt and others, "Comparison of the continuous, semi-discrete and fully-discrete transparent boundary conditions (TBC) for the parabolic wave equation 1. Theory" , 2009.

S. Schöps, H. De Gersem and A. Bartel, "Co-simulation as multirate time integration of field/circuit coupled problems" in Proceedings of the 17th Conference on the Computation of Electromagnetic Fields-Compumag 2009, 2009, pp. 227--228.

T. S. Doorn, J. A. Croon, E. J. W. Maten and A. D. Bucchianico, "A yield centric statistical design method for optimization of the SRAM active column" in 2009 Proceedings of {ESSCIRC}, {IEEE}, Sep. 2009.

O. Gloger, M. Ehrhardt, T. Dietrich, O. Hellwich, K. Graf and E. Nagel, "A three stepped coordinated Level Set Segmentation Method for Identifying atherosclerotic plaques on MR-images", Commun. Numer. Meth. in Engng., vol. 25, no. 6, pp. 615--638, 2009.

M. Striebel, A. Bartel and M. Günther, "A multirate ROW-scheme for index-1 network equations", Applied Numerical Mathematics, vol. 59, no. 3, pp. 800--814, 2009. Elsevier.

M. Ehrhardt, J. Fuhrmann and A. Linke, "A model of an electrochemical flow cell with porous layer" , 2009.

C. Kahl and M. Günther, "Complete the correlation matrix", From Nano to Space: Applied Mathematics Inspired by Roland Bulirsch, pp. 229--244, 2008. Springer Berlin Heidelberg.

M. Ehrhardt and C. Zheng, "Exact artificial boundary conditions for problems with periodic structures", Journal of Computational Physics, vol. 227, no. 14, pp. 6877--6894, 2008. Elsevier.

M. Ehrhardt, J. Sun and C. Zheng, "Evaluation of exact boundary mappings for one-dimensional semiinfinite periodic arrays" , 2008.

M. Ehrhardt, "Discrete transparent boundary conditions for Schrödinger-type equations for non-compactly supported initial data", Applied Numerical Mathematics, vol. 58, no. 5, pp. 660--673, 2008. North-Holland.

M. Ehrhardt and R. E. Mickens, "Discrete models for the cube-root differential equation", Neural, Parallel and Scientific Computations, vol. 16, no. 2, pp. 179, 2008.

A. Zisowsky and M. Ehrhardt, "Discrete artificial boundary conditions for nonlinear Schrödinger equations", Mathematical and computer modelling, vol. 47, no. 11-12, pp. 1264--1283, 2008. Pergamon.

J. Ankudinova and M. Ehrhardt, "Fixed domain transformations and split-step finite difference schemes for Nonlinear Black-Scholes equations for American Options" , 2008.

S. Schöps, A. Bartel, H. De Gersem and M. Günther, "Co-Simulation of Circuits Refined by 3-D Conductor Models", ABTEKNILLINEN KORKEAKOULU, pp. 197, 2008.

A. Verhoeven, B. Tasi{\'{c}}, T. G. J. Beelen, E. J. W. Maten and R. M. M. Mattheij, "BDF compound-fast multirate transient analysis with adaptive stepsize control", J. of Numerical Analysis, Industrial and Applied Mathematics (JNAIAM), vol. 3, no. 3-4, pp. 275-297, 2008.

X. Antoine, A. Arnold, C. Besse, M. Ehrhardt and A. Schädle, "A review of transparent and artificial boundary conditions techniques for linear and nonlinear Schrödinger equations", 2008. Berlin: Weierstraß-Institut für Angewandte Analysis und Stochastik.

M. Ehrhardt and R. E. Mickens, "A fast, stable and accurate numerical method for the Black--Scholes equation of American options", International Journal of Theoretical and Applied Finance, vol. 11, no. 05, pp. 471--501, 2008. World Scientific Publishing Company.

A. Bratsos, M. Ehrhardt and I. T. Famelis, "A discrete Adomian decomposition method for discrete nonlinear Schrödinger equations", Applied mathematics and computation, vol. 197, no. 1, pp. 190--205, 2008. Elsevier.

A. Bartel and R. Pulch, "A concept for classification of partial differential algebraic equations in nanoelectronics" in Progress in Industrial Mathematics at ECMI 2006, 2008, pp. 506--511.

T. S. Doorn, E. J. W. Maten, J. A. Croon, A. D. Bucchianico and O. Wittich, "Importance sampling Monte Carlo simulations for accurate estimation of {SRAM} yield" in {ESSCIRC} 2008 - 34th European Solid-State Circuits Conference, {IEEE}, Sep. 2008, pp. 230-233.