@book{34559,
	author = {"Singh, S.N."},
	title = {High Voltage DC Transmission:},
	publisher = {Indian Insitiute of Technology},
	address = {Kanpur},
	url = {http://video.snu.edu.in/index.php?id=7855&cat=Electrical Engineering&course=High Voltage DC Transmission&url=Phase2_Video/108104013/mod01lec21.mp4}
}