1. Aubin, J., 1992. Effects of geomagnetically induced currents on power transformers. Electra 141, 24–33.
2. Béland, J., 1998. SMDA4: Manuel de Référence (HP-1000/A-990), Vol. 2. IREQ internal report.
3. Operating the Hydro-Québec grid under magnetic storm conditions since the storm of 13 March 1989;Blais;Solar-Terrestrial Predictions-IV Proceedings,1993
4. Bolduc, L., Aubin, J., 1977/78. Effects of direct currents in power transformers. Part I. a general theoretical approach; Part II. Simplified calculations for large transformers. Electric Power Systems Research 1, 291–304.
5. Bolduc, L., Langlois, P., 1995. Hydro-Québec follow-up of the March 1989 event. XXI IUGG General Assembly, Session GA5.06, Boulder, Colorado.