Müller, H. W. Plasma Edge and Wall (E2M), Max Planck Institute for Plasma Physics, Max Planck Society;
Adamek, J., Seidl, J., Horacek, J., Müller, H. W., Schrittwieser, R., Mehlmann, F., Vondracek, P., Ptak, S., COMPASS Team, & ASDEX Upgrade Team (2013). Direct plasma potential measurments by ball-pen probe and self-emitting Langmuir probe on COMPASS and ASDEX Upgrade. Talk presented at 10th International Workshop on Electric Probes in Magnetized Plasmas (IWEP 2013). Madrid. 2013-07-09 - 2013-07-12.