M, K. , Ali, M. , Alsdai, B. , Nizam, M. , Inayati, I.. "Voltage Problem Location Classification Using Performance of Least Squares Support Vector Machine LS-SVM and Learning Vector Quantization LVQ". World Academy of Science, Engineering and Technology, Open Science Index 92, International Journal of Electrical and Computer Engineering (2014), 8(8), 1328 - 1332.