Design of an Analog-digital PI Controller with Gain Scheduling for Laser Tracker Systems. - Christian Wachten; Lars Friedrich; Claas Müller; Holger Reinecke; Christoph Ament (ICINCO-SPSMC, 2008)

An integrated power supply system for low-power 3.3V electronics using on-chip polymer electrolyte membrane (PEM) fuel cells. - Mirko Frank; Matthias Kuhl; Gilbert Erdler; Ingo Freund; Yiannos Manoli; Claas Müller; Holger Reinecke (ISSCC, 2009)

An Integrated Power Supply System for Low Power 3.3 V Electronics Using On-Chip Polymer Electrolyte Membrane (PEM) Fuel Cells. - Mirko Frank; Matthias Kuhl; Gilbert Erdler; Ingo Freund; Yiannos Manoli; Claas Müller; Holger Reinecke (IEEE J. Solid State Circuits, 2010)