@book{22313,
	author = {Gopakumar, K.},
	title = {Industrial Drives - Power Electronics:},
	publisher = {Indian Insitiute of Technology},
	address = {Bombay},
	url = {http://video.snu.edu.in/index.php?id=2417&cat=Electrical Engineering&course=Industrial Drives - Power Electronics&url=Phase1_Video/108108077/lec16.mp4}
}