1. Analysis of a voltage stability incident in the Greek power system;Vournas;IEEE Power Eng Soc Winter Meet,2000
2. Power system stability and control;Kundur,1994
3. Power system voltage stability;Taylor,1994
4. NERC. 1996 system disturbances: review of selected electric system disturbances in North America; 2008. .
5. Calculation of the extreme loading condition of a power system for the assessment of voltage stability;Semlyen;IEEE Trans Power Syst,1991