7[7]Bolden R L. Use of stabilising signals on static compensators to enhance the damping of power systems. Symposium on Static Var Systems. Capricornia Institute, Rockhampton, Australia, Nov. 1985.
8[8]Erinmez I A, et al. Static var compensators. CIGRE Working Group 38-01 Task Force No. 2 on SVC,1986.