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.