@book{66993,
	author = {Toftegaard Nielsen, Thomas. and Wigard, Jeroen. and ebrary, Inc.},
	title = {Performance enhancements in a frequency hopping GSM network},
	publisher = {Kluwer Academic Publishers,},
	year = {c2002.},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10051599}
}