1 Oechsle, F - of Electrical Power Engineering 2 Olejniczak, J 1 Ontario Hydro Research Division, Canada 5 Orlowska-Kowalska, T - Orlowska-Kowalska,+T 2 Orłowska-Kowalska, T 2 Osowski, S 1 Ouadie, B 1 Ozimek, M