Accuracy of a cryocooler-based programmable Josephson Voltage standard. - Ralf Behr; Marco Schubert; Torsten May (IEEE Trans. Instrum. Meas., 2004)

Pulse-Driven Josephson Junction Arrays for High-Precision AC-Voltage Synthesis of Unipolar and Bipolar Waveforms. - Marco Schubert; Gerd Wende; Torsten May; Uwe Huebner; Hans-Georg Meyer; Oleg A. Chevtchenko; Helko E. van den Brom; Ernest Houtzager (IEEE Trans. Instrum. Meas., 2007)

First Direct Comparison of a Cryocooler-Based Josephson Voltage Standard System at 10 V. - Marco Schubert; Michael Starkloff; Matthias Meyer; Gerd Wende; Solveig Anders; Birger Steinbach; Torsten May; Hans-Georg Meyer (IEEE Trans. Instrum. Meas., 2009)

An AC Josephson Voltage Standard up to the Kilohertz Range Tested in a Calibration Laboratory. - Marco Schubert; Michael Starkloff; Jinnie Lee; Ralf Behr; Luis Palafox; Alexander Wintermeier; Andreas C. Boeck; Philip M. Fleischmann; Torsten May (IEEE Trans. Instrum. Meas., 2015)