The 5% Approach as Building Block of an Energy System dominated by Renewables. - Enno Wieben; Thomas Kumm; Elke Hohn; Matthias Rohr; Michael Stadler (EnviroInfo, 2014)

New control functions for IEC 61850. - Julia Masurkewitz-Moller; Thomas Kumm; Wolfgang Friedrich; Mathias Uslar (INDIN, 2017)