@book{26,
	author = {Halonen, Timo.},
	title = {GSM, GPRS, and EDGE performance :},
	publisher = {J. Wiley,},
	year = {c2003.},
	address = {Chichester, West Sussex, England ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/wiley0310/2003057593.html}
}