1. Transport d'energie a nombre de phases eleve;Barthold;Electra,1973
2. High phase order transmission — A feasibility analysis — Part I — Steady state considerations;Stewart,1978
3. High phase order transmission — A feasibility analysis — Part II — Overvoltages and insulation requirements;Stewart,1978
4. 138 kV, six-phase order transmission feasibility: an overview;Guyker,1979
5. Trasmissione e distribuzione in alta tensione dell'energia elettrica con linee esafase;Augugliaro;L'Energia Elettrica,1981