TY - CHAP A1 - Küchler, Andreas A1 - Rösner, M. A1 - Fiddes, H. A1 - Küstermann, M. A1 - Schenk, M. A1 - Grossmann, S. A1 - Speck, J. T1 - About the Measurement of DC Electric Fields under Stationary and Transient Operation in Oil-impregated DC Insulation Systems T2 - 17th ISH International Symposium on High Voltage Engineering Y1 - 2011 CY - Hannover ER -