فهرس المقالات Roy Billiton IEEE 31-bus test system حرية الوصول المقاله صفحة الملخص نص كامل 1 - Optimal Placement of Phasor Measurement Units to Maintain CompleteObservability Considering Maximum Reliability by Non-dominated Sorting Genetic Algorithm-II (NSGA-II) bahman taheri Farzad Ghasemzade Payam Farhadi