@article {varoutas2003business,
	title = {Business opportunities throughUMTS-WLAN networks},
	journal = {Annales des t{\'e}l{\'e}communications},
	volume = {58},
	number = {3-4},
	year = {2003},
	pages = {553{\textendash}575},
	publisher = {Springer-Verlag},
	author = {Varoutas, Dimitris and Katsianis, Dimitris and Sphicopoulos, Thomas and Loizillon, Fran{\c c}ois and Kalhagen, Kjell Ove and Stordahl, Kjell and Welling, Ilari and Harno, Jarmo}
}
