1. Bolduc, L.: GIC observations and studies in the Hydro-Quebec power system. Journal of Atmospheric and Solar-Terrestrial Physics, 64, 1793–1802 (2002)
2. Bolduc, L., Granger, M., et al.: Development of a DC current-blocking device for transformer neutrals. IEEE Transactions on power delivery, 20, 163–168 (2005)
3. Elovaara, J., Lindblad, P., et al.: Geomagnetically induced currents in the Nordic power system and their effects on equipment, control, protection and operation. Paper 36–301 of CIGRE Session 1992, Paris, 10 p (1992)
4. Lahtinen, M., Elovaara, J.,: GIC occurrences and GIC tests for 400 kV system transformer. IEEE {Transactions} on Power Delivery, 17, 555–561 (2002)
5. McNutt, W.: The effect of GIC on power transformers. Paper presented in IEEE PES Summer meeting July 17, 1990 in Minneapolis during the panel session ‘‘geomagnetic storm cycle 22: Power system problems on the horizon, {pp. 32–37} (1990)