Open Science Research Excellence
R. Leelaruji and  V. Knazkins,  The Use of Voltage Stability Indices and Proposed Instability Prediction to Coordinate with Protection Systems.   journal   = {International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2009, vol. 29(5). 1146 - 1151[viewed 24 March 2019]. Available from: http://waset.org/publications/3856.