M. Berroth, M. Schmidt, S. Heck, and M. Grözing. Joint Symposium on Opto- and Microelectronic Devices and Circuits (SODC), page 111--114. Berlin, Germany, (2010)
M. Berroth, J. Willeke, and I. Dettmann. IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), page 811--813. Knoxville, TN, USA, (2008)