An ultra low power bandgap operational at supply as low as 0.75V. - Vadim Ivanov; Johannes Gerber; Ralf Brederlow (ESSCIRC, 2011)

An Ultra Low Power Bandgap Operational at Supply From 0.75 V. - Vadim Ivanov; Ralf Brederlow; Johannes Gerber (IEEE J. Solid State Circuits, 2012)

Architectural and Circuit Design Techniques for Power Management of Ultra-Low-Power MCU Systems. - Michael Lueders; Björn Eversmann; Johannes Gerber; Korbinian Huber; Rüdiger Kuhn; Michael Zwerg; Doris Schmitt-Landsiedel; Ralf Brederlow (IEEE Trans. Very Large Scale Integr. Syst., 2014)