References
- Cigre SC14 Colloquium DC Transmission based on Voltage Source Converters Gunnar Asplund;Kjell Eriksson;Kjell Svensson
- Cigre Conference DC Transmission based on Voltage Source Converters Gunnar Asplund;Kjell Eriksson;Hongbo Jiang;Johan Lindberg;Rolf Palsson;Kjell Svensson