@book{8963,
	author = {Shepherd, W. and Hulley, L. N.},
	title = {Power Electronics and Motor Control },
	publisher = {Cambridge University Press,},
	year = {1998.},
	address = {New Delhi.},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0521478138/chopaconline-20}
}