1. High phase order transmission;Barthold;Electra,1973
2. Feasibility studies of higher order phase electrical transmission system (Phase I);Venkata,1976
3. Feasibility studies of higher order phase electrical transmission system (Phase II);Venkata,1977
4. Feasibility studies of higher order phase electrical transmission system (Phase III);Venkata,1978
5. 138-kV, six phase transmission system feasibility;Guyker,1978