@book{21314,
	author = {Singh, S. N.},
	title = {Power Systems Operation and Control:},
	publisher = {Indian Insitiute of Technology},
	address = {Kanpur},
	url = {http://video.snu.edu.in/index.php?id=1813&cat=Electrical Engineering&course=Power Systems Operation and Control&url=Phase1_Video/108104052/lec01.mp4}
}