Stable cryogenic vacuum capacitor for single-electron charging experiments. - Gerd-Dietmar Willenberg; Peter Warnecke (IEEE Trans. Instrum. Meas., 2001)

Counting electrons one by one-overview of a joint European research project. - Helko E. van den Brom; Oswin Kerkhof; Sergey V. Lotkhov; Sergey A. Bogoslovsky; Gerd-Dietmar Willenberg; Hansjörg Scherer; Alexander B. Zorin; S. Pedersen; C. Kristoffersson; A. Aassime; Per Delsing; Marian A. Taslakov; et al. (IEEE Trans. Instrum. Meas., 2003)

A traceable precision current source for currents between 100 aA and 10 pA. - Gerd-Dietmar Willenberg; H. N. Tauscher; Peter Warnecke (IEEE Trans. Instrum. Meas., 2003)

Steps toward a capacitance standard based on single-electron counting at PTB. - Hansjörg Scherer; Sergey V. Lotkhov; Gerd-Dietmar Willenberg; Alexander B. Zorin (IEEE Trans. Instrum. Meas., 2005)

Progress Towards the Electron Counting Capacitance Standard at PTB. - Hansjörg Scherer; Sergey V. Lotkhov; Gerd-Dietmar Willenberg; B. Camarota (IEEE Trans. Instrum. Meas., 2009)

Novel Digital Voltage Ramp Generator for Use in Precision Current Sources in the Picoampere Range. - Gerd-Dietmar Willenberg; H. N. Tauscher (IEEE Trans. Instrum. Meas., 2009)