1. Andersen, A., Ekström, Å.: Design and Testing of the Thyristor Valve Installed in the Vester Hassing Convertor Station of the Konti-Skan HVDC Transmission. CIGRÉ Session 1974, Paris (paper 14-03)
2. Arcidiacono, V., Corsi, S., Pincella, C., Gasparini, E., Piffer, A., Toffolo, G., Ricci, P., Vascellari, S., Zafferani, G.: System Commissioning Tests for the SACOI-2 HVDC Three-Terminal Link. CIGRÉ Session 1994, Paris (paper reference 14-107)
3. Arrillaga, J.: High Voltage Direct Current Transmission. Peter Peregrinus (1983)
4. Banks, R., Rowe, B.A., Noble, R.G.: Testing Thyristor Valves for HVDC Transmission. CIGRÉ Session 1978, Paris (paper 14-07)
5. Berggren, S., Nilsson, B., Olsson, K.-E., Weimers, L.: A New Concept for Mechanical Design of Thyristor Valves for HVDC. CIGRÉ Session 1982, Paris (paper 14-07)