A versatile system for the generation and the development of speech coding strategies in cochlear implants. - Norbert Tonder; Rainer Hartmann; Rainer Klinke (IEEE Trans. Biomed. Eng., 1998)

A Sparse Grid Discretization of the Helmholtz Equation with Variable Coefficients in High Dimensions. - Christoph Pflaum; Rainer Hartmann (SIAM J. Numer. Anal., 2016)

A prewavelet-based algorithm for the solution of second-order elliptic differential equations with variable coefficients on sparse grids. - Rainer Hartmann; Christoph Pflaum (Numer. Algorithms, 2018)