@book{221,
	author = {Nathan, P. Muthu Chidambara.},
	title = {Wireless communications /},
	publisher = {PHI Learning,},
	year = {2008.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8120335147/chopaconline-20}
}