1. High-phase order transmission;Barthold;Electra,1972
2. High phase order transmission — a feasibility analysis;Stewart,1978
3. Six-phase (multiphase) power transmission: concept and reliability aspects;Venkata,1976
4. 138 kV six-phase transmission system feasibility;Guyker,1978
5. High phase order — ready for application;Stewart;IEEE Trans.,1972