1. Output and regulation in long-distance lines;Thomas;Trans. Am. Inst. Electr. Eng.,1909
2. Double conductors for transmission lines;Dwight;Trans. AIEE,1932
3. Three-phase multiple-conductor circuits;Clarke;Trans. AIEE,1932
4. Bibliography on extra-high-voltage systems;Abetti;Power Appar. Syst. III Trans. AIEE,1958
5. Bibliography on bundled conductors;Sandell;IEEE Trans. Power Appar. Syst.,1963