1. C.A. Canizares (Ed.), Voltage stability assessment, procedures and guides, IEEE/Power Engineering Society Power Systems Stability Subcommittee, 1999, online available at http://www.power.uwaterloo.ca.
2. C.W. Taylor, Power System Voltage Stability, McGraw-Hill Inc, 1994.
3. P. Kundur, Power System Stability and Control, McGraw-Hill Inc, 1994.
4. Voltage instability, phenomena, countermeasures and analysis method;Cutsem;Proc. IEEE,2000
5. Towards the development of a systematic approach for voltage stability assessment of large-scale power system;Gao;IEEE Trans. Power Syst,1996