"The High Voltage Power Supply System for the FOBOS Forward Array" given at the International Workshop on Data Acquisition Systems for the Neutron Experiment Facilities (DANEF-97), Dubna, Russia, June 2-4, 1997.

"The BST-2000 trigger concept" given at the Workshop on the H1 trigger system, Ringberg, Germany, January 23-26, 2000.

"Development of a Track Trigger for the H1 using Silicon Pad Detectors" given at the Deutsche Physikalische Gesellschaft, Bereich Teilchenphysik, Dresden, Germany, March 20-24, 2000.

"Development of a Fast H1 Trigger using Silicon Pad Detectors" given at the 10th International Workshop on Vertex Detectors VERTEX-2001, Brunnen, Switzerland, September 23-28, 2001.

"Triggering in the Backward Region of H1 using the BST" given at the Workshop on the H1 trigger system, Ringberg, Germany, January 13-16, 2002.

"The upgraded H1 Backward Silicon Tracker" given at the Technical Seminar at the Humboldt University of Berlin, Berlin, Germany, January 18, 2002.

"A Silicon Pad Detector for Triggering on Low Q² Events" given at the Deutsche Physikalische Gesellschaft, Bereich Teilchenphysik, Leipzig, Germany, March 18-22, 2002.

"The Backward Silicon Track Trigger for the HERA Experiment H1" given at the PhD thesis presentation at the Humboldt University of Berlin, Berlin, Germany, October 21, 2003.

"The New Radiation-hard Readout for the Forward and Backward Silicon Detectors of H1" presented at the 10th European Symposium on Semiconductor Detectors, Wildbad Kreuth, Germany, June 12-16, 2005.

"Studies of Proton Structure at HERA" given at the 12th International QCD Conference QCD-2005, Montpellier, France, July 4-8, 2005.

"Characterisation of n-in-p pixel sensors for high radiation environments" given at the International Workshop on Semiconductor Pixel Detectors for Particles and Imaging Pixel-2010, Grindelwald, Switzerland, September 6-10, 2010.