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M. Nitzsche, M. Zehelein, and J. Roth-Stielow. Journal of Engineering; The 9th International Conference on Power Electronics, Machines and Drives (PEMD), IET, (April 2018)
J. Ruthardt, J. Woelfle, M. Zehelein, and J. Roth-Stielow. PCIM Europe 2017; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, page 1-8. (May 2017)