@article {kakaletris2004designing,
	title = {Designing and Implementing an Open Infrastructure for Location-Based, Tourism-Related Content Delivery},
	journal = {Wireless Personal Communications},
	volume = {30},
	number = {2-4},
	year = {2004},
	pages = {153{\textendash}165},
	publisher = {Kluwer Academic Publishers},
	author = {Kakaletris, George and Varoutas, Dimitris and Katsianis, Dimitris and Sphicopoulos, Thomas and Kouvas, Giorgos}
}
