3D Profiling by Optical Demodulation with an Image Intensifier. - Heinrich Höfler; Volker Jetter; Elmar Wagner (Three-Dimensional Image Capture and Applications, 1999)

A 1-MHz-bandwidth second-order continuous-time quadrature bandpass sigma-delta modulator for low-IF radio receivers. - Frank Henkel; Ulrich Langmann; André Hanke; Stefan Heinen; Elmar Wagner (IEEE J. Solid State Circuits, 2002)